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[0, 15, 89]: 2019-02-27
  - fix for items with flow-mapping in block sequence output on single line
    (reported by `Zahari Dim <https://bitbucket.org/zahari_dim/>`__)
  - fix for safe dumping erroring in creation of representereror when dumping namedtuple
    (reported and solution by `Jaakko Kantojärvi <https://bitbucket.org/raphendyr/>`__)

[0, 15, 88]: 2019-02-12
  - fix inclusing of python code from the subpackage data (containing extra tests,
    reported by `Florian Apolloner <https://bitbucket.org/apollo13/>`__)

[0, 15, 88]: 2019-02-12
  - fix inclusing of python code from the subpackage data (containing extra tests,
    reported by `Florian Apolloner <https://bitbucket.org/apollo13/>`__)

[0, 15, 87]: 2019-01-22
  - fix problem with empty lists and the code to reinsert merge keys (reported via email 
     by Zaloo)

[0, 15, 87]: 2019-01-22
  - fix problem with empty lists and the code to reinsert merge keys (reported via email 
    by Zaloo)

[0, 15, 86]: 2019-01-16
  - reinsert merge key in its old position (reported by grumbler on
    <Stackoverflow <https://stackoverflow.com/a/54206512/1307905>`__)
  - fix for issue with non-ASCII anchor names (reported and fix
    provided by Dandaleon Flux via email)
  - fix for issue when parsing flow mapping value starting with colon (in pure Python only)
    (reported by `FichteFoll <https://bitbucket.org/FichteFoll/>`__)

[0, 15, 86]: 2019-01-15
  - reinsert merge key in its old position (reported by grumbler on
    <Stackoverflow <https://stackoverflow.com/a/54206512/1307905>`__)
  - fix for issue with non-ASCII anchor names (reported and fix
    provided by Dandaleon Flux via email)
  - fix for issue when parsing flow mapping value starting with colon (in pure Python only)
    (reported by `FichteFoll <https://bitbucket.org/FichteFoll/>`__)

[0, 15, 85]: 2019-01-08
  - the types used by `SafeConstructor` for mappings and sequences can
    now by set by assigning to `XXXConstructor.yaml_base_dict_type`
    (and `..._list_type`), preventing the need to copy two methods
    with 50+ lines that had `var = {}` hardcoded.  (Implemented to
    help solve an feature request by `Anthony Sottile
    <https://bitbucket.org/asottile/>`__ in an easier way)

[0, 15, 84]: 2019-01-07
  - fix for `CommentedMap.copy()` not returning `CommentedMap`, let alone copying comments etc.
    (reported by `Anthony Sottile <https://bitbucket.org/asottile/>`__)

[0, 15, 83]: 2019-01-02
  - fix for bug in roundtripping aliases used as key (reported via email by Zaloo)

[0, 15, 82]: 2018-12-28
  - anchors and aliases on scalar int, float, string and bool are now preserved. Anchors
    do not need a referring alias for these (reported by 
    `Alex Harvey <https://bitbucket.org/alexharv074/>`__)
  - anchors no longer lost on tagged objects when roundtripping (reported by `Zaloo 
    <https://bitbucket.org/zaloo/>`__)

[0, 15, 81]: 2018-12-06
 - fix issue saving methods of metaclass derived classes (reported and fix provided
   by `Douglas Raillard <https://bitbucket.org/DouglasRaillard/>`__)

[0, 15, 80]: 2018-11-26
 - fix issue emitting BEL character when round-tripping invalid folded input
   (reported by Isaac on `StackOverflow <https://stackoverflow.com/a/53471217/1307905>`__)
    
[0, 15, 79]: 2018-11-21
  - fix issue with anchors nested deeper than alias (reported by gaFF on
    `StackOverflow <https://stackoverflow.com/a/53397781/1307905>`__)

[0, 15, 79]: 2018-11-21
  - fix issue with anchors nested deeper than alias (reported by gaFF on
    `StackOverflow <https://stackoverflow.com/a/53397781/1307905>`__)

[0, 15, 78]: 2018-11-15
  - fix setup issue for 3.8 (reported by `Sidney Kuyateh 
    <https://bitbucket.org/autinerd/>`__)

[0, 15, 77]: 2018-11-09
  - setting `yaml.sort_base_mapping_type_on_output = False`, will prevent
    explicit sorting by keys in the base representer of mappings. Roundtrip
    already did not do this. Usage only makes real sense for Python 3.6+
    (feature request by `Sebastian Gerber <https://bitbucket.org/spacemanspiff2007/>`__).
  - implement Python version check in YAML metadata in ``_test/test_z_data.py``

[0, 15, 76]: 2018-11-01
  - fix issue with empty mapping and sequence loaded as flow-style
    (mapping reported by `Min RK <https://bitbucket.org/minrk/>`__, sequence
    by `Maged Ahmed <https://bitbucket.org/maged2/>`__)

[0, 15, 75]: 2018-10-27
  - fix issue with single '?' scalar (reported by `Terrance 
    <https://bitbucket.org/OllieTerrance/>`__)
  - fix issue with duplicate merge keys (prompted by `answering 
    <https://stackoverflow.com/a/52852106/1307905>`__ a 
    `StackOverflow question <https://stackoverflow.com/q/52851168/1307905>`__
    by `math <https://stackoverflow.com/users/1355634/math>`__)

[0, 15, 75]: 2018-10-27
  - fix issue with single '?' scalar (reported by `Terrance 
    <https://bitbucket.org/OllieTerrance/>`__)
  - fix issue with duplicate merge keys (prompted by `answering 
    <https://stackoverflow.com/a/52852106/1307905>`__ a 
    `StackOverflow question <https://stackoverflow.com/q/52851168/1307905>`__
    by `math <https://stackoverflow.com/users/1355634/math>`__)

[0, 15, 74]: 2018-10-17
  - fix dropping of comment on rt before sequence item that is sequence item
    (reported by `Thorsten Kampe <https://bitbucket.org/thorstenkampe/>`__)

[0, 15, 73]: 2018-10-16
  - fix irregular output on pre-comment in sequence within sequence (reported
    by `Thorsten Kampe <https://bitbucket.org/thorstenkampe/>`__)
  - allow non-compact (i.e. next line) dumping sequence/mapping within sequence.

[0, 15, 72]: 2018-10-06
  - fix regression on explicit 1.1 loading with the C based scanner/parser
    (reported by `Tomas Vavra <https://bitbucket.org/xtomik/>`__)

[0, 15, 72]: 2018-10-06
  - fix regression on explicit 1.1 loading with the C based scanner/parser
    (reported by `Tomas Vavra <https://bitbucket.org/xtomik/>`__)

[0, 15, 71]: 2018-09-26
  - fix regression where handcrafted CommentedMaps could not be initiated (reported by 
    `Dan Helfman <https://bitbucket.org/dhelfman/>`__)
  - fix regression with non-root literal scalars that needed indent indicator
    (reported by `Clark Breyman <https://bitbucket.org/clarkbreyman/>`__)
  - tag:yaml.org,2002:python/object/apply now also uses __qualname__ on PY3
    (reported by `Douglas RAILLARD <https://bitbucket.org/DouglasRaillard/>`__)

[0, 15, 70]: 2018-09-21
  - reverted CommentedMap and CommentedSeq to subclass ordereddict resp. list,
    reimplemented merge maps so that both ``dict(**commented_map_instance)`` and JSON
    dumping works. This also allows checking with ``isinstance()`` on ``dict`` resp. ``list``.
    (Proposed by `Stuart Berg <https://bitbucket.org/stuarteberg/>`__, with feedback
    from `blhsing <https://stackoverflow.com/users/6890912/blhsing>`__ on
    `StackOverflow <https://stackoverflow.com/q/52314186/1307905>`__)

[0, 15, 69]: 2018-09-20
  - fix issue with dump_all gobbling end-of-document comments on parsing
    (reported by `Pierre B. <https://bitbucket.org/octplane/>`__)

[0, 15, 68]: 2018-09-20
  - fix issue with parsabel, but incorrect output with nested flow-style sequences
    (reported by `Dougal Seeley <https://bitbucket.org/dseeley/>`__)
  - fix issue with loading Python objects that have __setstate__ and recursion in parameters
    (reported by `Douglas RAILLARD <https://bitbucket.org/DouglasRaillard/>`__)

[0, 15, 67]: 2018-09-19
  - fix issue with extra space inserted with non-root literal strings 
    (Issue reported and PR with fix provided by 
    `Naomi Seyfer <https://bitbucket.org/sixolet/>`__.)

[0, 15, 66]: 2018-09-07
  - fix issue with fold indicating characters inserted in safe_load-ed folded strings
    (reported by `Maximilian Hils <https://bitbucket.org/mhils/>`__).

[0, 15, 65]: 2018-09-07
  - fix issue #232 revert to throw ParserError for unexcpected ``]``
    and ``}`` instead of IndexError. (Issue reported and PR with fix
    provided by `Naomi Seyfer <https://bitbucket.org/sixolet/>`__.)
  - added ``key`` and ``reverse`` parameter (suggested by Jannik Klemm via email)
  - indent root level literal scalars that have directive or document end markers
    at the beginning of a line

[0, 15, 64]: 2018-08-30
  - support round-trip of tagged sequences: ``!Arg [a, {b: 1}]``
  - single entry mappings in flow sequences now written by default without quotes
    set ``yaml.brace_single_entry_mapping_in_flow_sequence=True`` to force
    getting ``[a, {b: 1}, {c: {d: 2}}]`` instead of the default ``[a, b: 1, c: {d: 2}]``
  - fix issue when roundtripping floats starting with a dot such as ``.5``
    (reported by `Harrison Gregg <https://bitbucket.org/HarrisonGregg/>`__)

[0, 15, 63]: 2018-08-29
  - small fix only necessary for Windows users that don't use wheels.

[0, 15, 62]: 2018-08-29
  - C based reader/scanner & emitter now allow setting of 1.2 as YAML version.
    ** The loading/dumping is still YAML 1.1 code**, so use the common subset of
    YAML 1.2 and 1.1 (reported by `Ge Yang <https://bitbucket.org/yangge/>`__)

[0, 15, 61]: 2018-08-23
  - support for round-tripping folded style scalars (initially requested 
    by `Johnathan Viduchinsky <https://bitbucket.org/johnathanvidu/>`__)
  - update of C code
  - speed up of scanning (~30% depending on the input)

[0, 15, 60]: 2018-08-18
  - cleanup for mypy 
  - spurious print in library (reported by 
    `Lele Gaifax <https://bitbucket.org/lele/>`__), now automatically checked 

[0, 15, 59]: 2018-08-17
  - issue with C based loader and leading zeros (reported by 
    `Tom Hamilton Stubber <https://bitbucket.org/TomHamiltonStubber/>`__)

[0, 15, 59]: 2018-08-17
  - issue with C based loader and leading zeros (reported by 
    `Tom Hamilton Stubber <https://bitbucket.org/TomHamiltonStubber/>`__)

[0, 15, 58]: 2018-08-17
  - simple mappings can now be used as keys when round-tripping::

      {a: 1, b: 2}: hello world
      
    although using the obvious operations (del, popitem) on the key will
    fail, you can mutilate it by going through its attributes. If you load the
    above YAML in `d`, then changing the value is cumbersome:

        d = {CommentedKeyMap([('a', 1), ('b', 2)]): "goodbye"}

    and changing the key even more so:

        d[CommentedKeyMap([('b', 1), ('a', 2)])] = d.pop(
                     CommentedKeyMap([('a', 1), ('b', 2)]))

    (you can use a `dict` instead of a list of tuples (or ordereddict), but that might result
    in a different order, of the keys of the key, in the output)
  - check integers to dump with 1.2 patterns instead of 1.1 (reported by 
    `Lele Gaifax <https://bitbucket.org/lele/>`__)
  

[0, 15, 57]: 2018-08-15
  - Fix that CommentedSeq could no longer be used in adding or do a copy
    (reported by `Christopher Wright <https://bitbucket.org/CJ-Wright4242/>`__)

[0, 15, 56]: 2018-08-15
  - fix issue with ``python -O`` optimizing away code (reported, and detailed cause
    pinpointed, by `Alex Grönholm <https://bitbucket.org/agronholm/>`__

[0, 15, 55]: 2018-08-14

  - unmade ``CommentedSeq`` a subclass of ``list``. It is now
    indirectly a subclass of the standard
    ``collections.abc.MutableSequence`` (without .abc if you are
    still on Python2.7). If you do ``isinstance(yaml.load('[1, 2]'),
    list)``) anywhere in your code replace ``list`` with
    ``MutableSequence``.  Directly, ``CommentedSeq`` is a subclass of
    the abstract baseclass ``ruamel.yaml.compat.MutableScliceableSequence``,
    with the result that *(extended) slicing is supported on 
    ``CommentedSeq``*.
    (reported by `Stuart Berg <https://bitbucket.org/stuarteberg/>`__)
  - duplicate keys (or their values) with non-ascii now correctly
    report in Python2, instead of raising a Unicode error.
    (Reported by `Jonathan Pyle <https://bitbucket.org/jonathan_pyle/>`__)

[0, 15, 54]: 2018-08-13

  - fix issue where a comment could pop-up twice in the output (reported by 
    `Mike Kazantsev <https://bitbucket.org/mk_fg/>`__ and by 
    `Nate Peterson <https://bitbucket.org/ndpete21/>`__)
  - fix issue where JSON object (mapping) without spaces was not parsed
    properly (reported by `Marc Schmidt <https://bitbucket.org/marcj/>`__)
  - fix issue where comments after empty flow-style mappings were not emitted
    (reported by `Qinfench Chen <https://bitbucket.org/flyin5ish/>`__)

[0, 15, 53]: 2018-08-12
  - fix issue with flow style mapping with comments gobbled newline (reported
    by `Christopher Lambert <https://bitbucket.org/XN137/>`__)
  - fix issue where single '+' under YAML 1.2 was interpreted as
    integer, erroring out (reported by `Jethro Yu
    <https://bitbucket.org/jcppkkk/>`__)

[0, 15, 52]: 2018-08-09
  - added `.copy()` mapping representation for round-tripping
    (``CommentedMap``) to fix incomplete copies of merged mappings
    (reported by `Will Richards
    <https://bitbucket.org/will_richards/>`__) 
  - Also unmade that class a subclass of ordereddict to solve incorrect behaviour
    for ``{**merged-mapping}`` and ``dict(**merged-mapping)`` (reported by
    `Filip Matzner <https://bitbucket.org/FloopCZ/>`__)

[0, 15, 51]: 2018-08-08
  - Fix method name dumps (were not dotted) and loads (reported by `Douglas Raillard 
    <https://bitbucket.org/DouglasRaillard/>`__)
  - Fix spurious trailing white-space caused when the comment start
    column was no longer reached and there was no actual EOL comment
    (e.g. following empty line) and doing substitutions, or when
    quotes around scalars got dropped.  (reported by `Thomas Guillet
    <https://bitbucket.org/guillett/>`__)

[0, 15, 50]: 2018-08-05
  - Allow ``YAML()`` as a context manager for output, thereby making it much easier
    to generate multi-documents in a stream. 
  - Fix issue with incorrect type information for `load()` and `dump()` (reported 
    by `Jimbo Jim <https://bitbucket.org/jimbo1qaz/>`__)

[0, 15, 49]: 2018-08-05
  - fix preservation of leading newlines in root level literal style scalar,
    and preserve comment after literal style indicator (``|  # some comment``)
    Both needed for round-tripping multi-doc streams in 
    `ryd <https://pypi.org/project/ryd/>`__.

[0, 15, 48]: 2018-08-03
  - housekeeping: ``oitnb`` for formatting, mypy 0.620 upgrade and conformity

[0, 15, 47]: 2018-07-31
  - fix broken 3.6 manylinux1 (result of an unclean ``build`` (reported by 
    `Roman Sichnyi <https://bitbucket.org/rsichnyi-gl/>`__)


[0, 15, 46]: 2018-07-29
  - fixed DeprecationWarning for importing from ``collections`` on 3.7
    (issue 210, reported by `Reinoud Elhorst
    <https://bitbucket.org/reinhrst/>`__). It was `difficult to find
    why tox/pytest did not report
    <https://stackoverflow.com/q/51573204/1307905>`__ and as time
    consuming to actually `fix
    <https://stackoverflow.com/a/51573205/1307905>`__ the tests.

[0, 15, 46]: 2018-07-29
  - fixed DeprecationWarning for importing from ``collections`` on 3.7
    (issue 210, reported by `Reinoud Elhorst
    <https://bitbucket.org/reinhrst/>`__). It was `difficult to find
    why tox/pytest did not report
    <https://stackoverflow.com/q/51573204/1307905>`__ and as time
    consuming to actually `fix
    <https://stackoverflow.com/a/51573205/1307905>`__ the tests.

[0, 15, 45]: 2018-07-29
  - fixed DeprecationWarning for importing from ``collections`` on 3.7
    (issue 210, reported by `Reinoud Elhorst
    <https://bitbucket.org/reinhrst/>`__). It was `difficult to find
    why tox/pytest did not report
    <https://stackoverflow.com/q/51573204/1307905>`__ and as time
    consuming to actually `fix
    <https://stackoverflow.com/a/51573205/1307905>`__ the tests.

[0, 15, 45]: 2018-07-26
  - After adding failing test for ``YAML.load_all(Path())``, remove StopIteration 
    (PR provided by `Zachary Buhman <https://bitbucket.org/buhman/>`__,
    also reported by `Steven Hiscocks <https://bitbucket.org/sdhiscocks/>`__.

[0, 15, 45]: 2018-07-26
  - After adding failing test for ``YAML.load_all(Path())``, remove StopIteration 
    (PR provided by `Zachary Buhman <https://bitbucket.org/buhman/>`__,
    also reported by `Steven Hiscocks <https://bitbucket.org/sdhiscocks/>`__.

[0, 15, 44]: 2018-07-14
  - Correct loading plain scalars consisting of numerals only and
    starting with `0`, when not explicitly specifying YAML version
    1.1. This also fixes the issue about dumping string `'019'` as
    plain scalars as reported by `Min RK
    <https://bitbucket.org/minrk/>`__, that prompted this chance.

[0, 15, 43]: 2018-07-12
  - merge PR33: Python2.7 on Windows is narrow, but has no
    ``sysconfig.get_config_var('Py_UNICODE_SIZE')``. (merge provided by
    `Marcel Bargull <https://bitbucket.org/mbargull/>`__)
  - ``register_class()`` now returns class (proposed by
    `Mike Nerone <https://bitbucket.org/Manganeez/>`__}

[0, 15, 42]: 2018-07-01
  - fix regression showing only on narrow Python 2.7 (py27mu) builds
    (with help from
    `Marcel Bargull <https://bitbucket.org/mbargull/>`__ and
    `Colm O'Connor <>`__).
  - run pre-commit ``tox`` on Python 2.7 wide and narrow, as well as
    3.4/3.5/3.6/3.7/pypy

[0, 15, 41]: 2018-06-27
  - add detection of C-compile failure (investigation prompted by 
    `StackOverlow <https://stackoverflow.com/a/51057399/1307905>`__ by 
    `Emmanuel Blot <https://stackoverflow.com/users/8233409/emmanuel-blot>`__),
    which was removed while no longer dependent on ``libyaml``, C-extensions
    compilation still needs a compiler though.

[0, 15, 40]: 2018-06-18
  - added links to landing places as suggested in issue 190 by
    `KostisA <https://bitbucket.org/ankostis/>`__
  - fixes issue #201: decoding unicode escaped tags on Python2, reported
    by `Dan Abolafia <https://bitbucket.org/danabo/>`__

[0, 15, 39]: 2018-06-16
  - merge PR27 improving package startup time (and loading when regexp not 
    actually used), provided by 
    `Marcel Bargull <https://bitbucket.org/mbargull/>`__

[0, 15, 38]: 2018-06-13
  - fix for losing precision when roundtripping floats by
    `Rolf Wojtech <https://bitbucket.org/asomov/>`__
  - fix for hardcoded dir separator not working for Windows by
    `Nuno André <https://bitbucket.org/nu_no/>`__
  - typo fix by `Andrey Somov <https://bitbucket.org/asomov/>`__

[0, 15, 37]: 2018-03-21
  - again trying to create installable files for 187

[0, 15, 36]: 2018-02-07
  - fix issue 187, incompatibility of C extension with 3.7 (reported by
    Daniel Blanchard)

[0, 15, 35]: 2017-12-03
  - allow ``None`` as stream when specifying ``transform`` parameters to
    ``YAML.dump()``.
    This is useful if the transforming function doesn't return a meaningful value
    (inspired by `StackOverflow <https://stackoverflow.com/q/47614862/1307905>`__ by
    `rsaw <https://stackoverflow.com/users/406281/rsaw>`__).

[0, 15, 34]: 2017-09-17
  - fix for issue 157: CDumper not dumping floats (reported by Jan Smitka)

[0, 15, 33]: 2017-08-31
  - support for "undefined" round-tripping tagged scalar objects (in addition to
    tagged mapping object). Inspired by a use case presented by Matthew Patton
    on `StackOverflow <https://stackoverflow.com/a/45967047/1307905>`__.
  - fix issue 148: replace cryptic error message when using !!timestamp with an
    incorrectly formatted or non- scalar. Reported by FichteFoll.

[0, 15, 32]: 2017-08-21
  - allow setting ``yaml.default_flow_style = None`` (default: ``False``) for
    for ``typ='rt'``.
  - fix for issue 149: multiplications on ``ScalarFloat`` now return ``float``

[0, 15, 31]: 2017-08-15
  - fix Comment dumping

[0, 15, 30]: 2017-08-14
  - fix for issue with "compact JSON" not parsing: ``{"in":{},"out":{}}``
    (reported on `StackOverflow <https://stackoverflow.com/q/45681626/1307905>`_ by
    `mjalkio <https://stackoverflow.com/users/5130525/mjalkio>`_

[0, 15, 29]: 2017-08-14
  - fix issue #51: different indents for mappings and sequences (reported by 
    Alex Harvey)
  - fix for flow sequence/mapping as element/value of block sequence with 
    sequence-indent minus dash-offset not equal two.

[0, 15, 28]: 2017-08-13
  - fix issue #61: merge of merge cannot be __repr__-ed (reported by Tal Liron)

[0, 15, 27]: 2017-08-13
  - fix issue 62, YAML 1.2 allows ``?`` and ``:`` in plain scalars if non-ambigious
    (reported by nowox)
  - fix lists within lists which would make comments disappear

[0, 15, 26]: 2017-08-10
  - fix for disappearing comment after empty flow sequence (reported by
    oit-tzhimmash)

[0, 15, 25]: 2017-08-09
  - fix for problem with dumping (unloaded) floats (reported by eyenseo)

[0, 15, 24]: 2017-08-09
  - added ScalarFloat which supports roundtripping of 23.1, 23.100,
    42.00E+56, 0.0, -0.0 etc. while keeping the format. Underscores in mantissas
    are not preserved/supported (yet, is anybody using that?).
  - (finally) fixed longstanding issue 23 (reported by `Antony Sottile
    <https://bitbucket.org/asottile/>`_), now handling comment between block
    mapping key and value correctly
  - warn on YAML 1.1 float input that is incorrect (triggered by invalid YAML
    provided by Cecil Curry)
  - allow setting of boolean representation (`false`, `true`) by using:
    ``yaml.boolean_representation = [u'False', u'True']``

[0, 15, 23]: 2017-08-01
  - fix for round_tripping integers on 2.7.X > sys.maxint (reported by ccatterina)

[0, 15, 22]: 2017-07-28
  - fix for round_tripping singe excl. mark tags doubling (reported and fix by Jan Brezina)

[0, 15, 21]: 2017-07-25
  - fix for writing unicode in new API, https://stackoverflow.com/a/45281922/1307905

[0, 15, 20]: 2017-07-23
  - wheels for windows including C extensions

[0, 15, 19]: 2017-07-13
  - added object constructor for rt, decorator ``yaml_object`` to replace YAMLObject.
  - fix for problem using load_all with Path() instance
  - fix for load_all in combination with zero indent block style literal
    (``pure=True`` only!)

[0, 15, 18]: 2017-07-04
  - missing ``pure`` attribute on ``YAML`` useful for implementing `!include` tag
    constructor for `including YAML files in a YAML file
    <https://stackoverflow.com/a/44913652/1307905>`_
  - some documentation improvements
  - trigger of doc build on new revision

[0, 15, 17]: 2017-07-03
  - support for Unicode supplementary Plane **output** with allow_unicode
    (input was already supported, triggered by
    `this <https://stackoverflow.com/a/44875714/1307905>`_ Stack Overflow Q&A)

[0, 15, 16]: 2017-07-01
  - minor typing issues (reported and fix provided by
    `Manvendra Singh <https://bitbucket.org/manu-chroma/>`_)
  - small doc improvements

[0, 15, 15]: 2017-06-27
  - fix for issue 135, typ='safe' not dumping in Python 2.7
    (reported by Andrzej Ostrowski <https://bitbucket.org/aostr123/>`_)

[0, 15, 14]: 2017-06-25
  - setup.py: change ModuleNotFoundError to ImportError (reported and fix by Asley Drake)

[0, 15, 13]: 2017-06-24
  - suppress duplicate key warning on mappings with merge keys (reported by
    Cameron Sweeney)

[0, 15, 12]: 2017-06-24
  - remove fatal dependency of setup.py on wheel package (reported by
    Cameron Sweeney)

[0, 15, 11]: 2017-06-24
  - fix for issue 130, regression in nested merge keys (reported by
    `David Fee <https://bitbucket.org/dfee/>`_)

[0, 15, 10]: 2017-06-24
  - fix for issue 130, regression in nested merge keys (reported by
    `David Fee <https://bitbucket.org/dfee/>`_)

[0, 15, 10]: 2017-06-23
  - top level PreservedScalarString not indented if not explicitly asked to
  - remove Makefile (not very useful anyway)
  - some mypy additions

[0, 15, 9]: 2017-06-16
  - fix for issue 127: tagged scalars were always quoted and seperated
    by a newline when in a block sequence (reported and largely fixed by
    `Tommy Wang <https://bitbucket.org/twang817/>`_)

[0, 15, 8]: 2017-06-15
  - allow plug-in install via ``install ruamel.yaml[jinja2]``

[0, 15, 8]: 2017-06-15
  - allow plug-in install via ``install ruamel.yaml[jinja2]``

[0, 15, 7]: 2017-06-14
  - add plug-in mechanism for load/dump pre resp. post-processing

[0, 15, 6]: 2017-06-10
  - a set() with duplicate elements now throws error in rt loading
  - support for toplevel column zero literal/folded scalar in explicit documents

[0, 15, 5]: 2017-06-08
  - repeat `load()` on a single `YAML()` instance would fail.

(0, 15, 4) 2017-06-08: |
  - `transform` parameter on dump that expects a function taking a
    string and returning a string. This allows transformation of the output
    before it is written to stream.
  - some updates to the docs

(0, 15, 3) 2017-06-07:
  - No longer try to compile C extensions on Windows. Compilation can be forced by setting
    the environment variable `RUAMEL_FORCE_EXT_BUILD` to some value
    before starting the `pip install`.

(0, 15, 2) 2017-06-07:
  - update to conform to mypy 0.511:mypy --strict

(0, 15, 1) 2017-06-07:
  - Any `duplicate keys  <http://yaml.readthedocs.io/en/latest/api.html#duplicate-keys>`_
    in mappings generate an error (in the old API this change generates a warning until 0.16)
  - dependecy on ruamel.ordereddict for 2.7 now via extras_require

(0, 15, 0) 2017-06-04:
  - it is now allowed to pass in a ``pathlib.Path`` as "stream" parameter to all
    load/dump functions
  - passing in a non-supported object (e.g. a string) as "stream" will result in a
    much more meaningful YAMLStreamError.
  - assigning a normal string value to an existing CommentedMap key or CommentedSeq
    element will result in a value cast to the previous value's type if possible.

(0, 14, 12) 2017-05-14:
  - fix for issue 119, deepcopy not returning subclasses (reported and PR by
    Constantine Evans <cevans@evanslabs.org>)

(0, 14, 11) 2017-05-01:
  - fix for issue 103 allowing implicit documents after document end marker line (``...``)
    in YAML 1.2

(0, 14, 10) 2017-04-26:
  - fix problem with emitting using cyaml

(0, 14, 9) 2017-04-22:
  - remove dependency on ``typing`` while still supporting ``mypy``
    (http://stackoverflow.com/a/43516781/1307905)
  - fix unclarity in doc that stated 2.6 is supported (reported by feetdust)

(0, 14, 8) 2017-04-19:
  - fix Text not available on 3.5.0 and 3.5.1, now proactively setting version guards
    on all files (reported by `João Paulo Magalhães <https://bitbucket.org/jpmag/>`_)

(0, 14, 7) 2017-04-18:
  - round trip of integers (decimal, octal, hex, binary) now preserve
    leading zero(s) padding and underscores. Underscores are presumed
    to be at regular distances (i.e. ``0o12_345_67`` dumps back as
    ``0o1_23_45_67`` as the space from the last digit to the
    underscore before that is the determining factor).

(0, 14, 6) 2017-04-14:
  - binary, octal and hex integers are now preserved by default. This
    was a known deficiency. Working on this was prompted by the issue report (112)
    from devnoname120, as well as the additional experience with `.replace()`
    on `scalarstring` classes.
  - fix issues 114 cannot install on Buildozer (reported by mixmastamyk).
    Setting env. var ``RUAMEL_NO_PIP_INSTALL_CHECK`` will suppress ``pip``-check.

(0, 14, 5) 2017-04-04:
  - fix issue 109 None not dumping correctly at top level (reported by Andrea Censi)
  - fix issue 110 .replace on Preserved/DoubleQuoted/SingleQuoted ScalarString
    would give back "normal" string (reported by sandres23)

(0, 14, 4) 2017-03-31:
  - fix readme

(0, 14, 3) 2017-03-31:
  - fix for 0o52 not being a string in YAML 1.1 (reported on
    `StackOverflow Q&A 43138503><http://stackoverflow.com/a/43138503/1307905>`_ by
    `Frank D <http://stackoverflow.com/users/7796630/frank-d>`_

(0, 14, 2) 2017-03-23:
  - fix for old default pip on Ubuntu 14.04 (reported by Sébastien Maccagnoni-Munch)

(0.14.1) 2017-03-22:
  - fix Text not available on 3.5.0 and 3.5.1 (reported by Charles Bouchard-Légaré)

(0.14.0) 2017-03-21:
  - updates for mypy --strict
  - preparation for moving away from inheritance in Loader and Dumper, calls from e.g.
    the Representer to the Serializer.serialize() are now done via the attribute
    .serializer.serialize(). Usage of .serialize() outside of Serializer will be
    deprecated soon
  - some extra tests on main.py functions

(0.13.14) 2017-02-12:
  - fix for issue 97, clipped block scalar followed by empty lines and comment
    would result in two CommentTokens of which the first was dropped.
    (reported by Colm O'Connor)

(0.13.13) 2017-01-28:
  - fix for issue 96, prevent insertion of extra empty line if indented mapping entries
    are separated by an empty line (reported by Derrick Sawyer)

(0.13.11) 2017-01-23:
  - allow ':' in flow style scalars if not followed by space. Also don't
    quote such scalar as this is no longer necessary.
  - add python 3.6 manylinux wheel to PyPI

(0.13.10) 2017-01-22:
  - fix for issue 93, insert spurious blank line before single line comment
    between indented sequence elements (reported by Alex)

(0.13.9) 2017-01-18:
  - fix for issue 92, wrong import name reported by the-corinthian

(0.13.8) 2017-01-18:
  - fix for issue 91, when a compiler is unavailable reported by Maximilian Hils
  - fix for deepcopy issue with TimeStamps not preserving 'T', reported on
    `StackOverflow Q&A <http://stackoverflow.com/a/41577841/1307905>`_ by
    `Quuxplusone <http://stackoverflow.com/users/1424877/quuxplusone>`_

(0.13.7) 2016-12-27:
  - fix for issue 85, constructor.py importing unicode_literals caused mypy to fail
    on 2.7 (reported by Peter Amstutz)

(0.13.6) 2016-12-27:
  - fix for issue 83, collections.OrderedDict not representable by SafeRepresenter
    (reported by Frazer McLean)

(0.13.5) 2016-12-25:
  - fix for issue 84, deepcopy not properly working (reported by Peter Amstutz)

(0.13.4) 2016-12-05:
  - another fix for issue 82, change to non-global resolver data broke implicit type
    specification

(0.13.3) 2016-12-05:
  - fix for issue 82, deepcopy not working (reported by code monk)

(0.13.2) 2016-11-28:
  - fix for comments after empty (null) values  (reported by dsw2127 and cokelaer)

(0.13.1) 2016-11-22:
  - optimisations on memory usage when loading YAML from large files (py3 -50%, py2 -85%)

(0.13.0) 2016-11-20:
  - if ``load()`` or ``load_all()`` is called with only a single argument
    (stream or string)
    a UnsafeLoaderWarning will be issued once. If appropriate you can surpress this
    warning by filtering it. Explicitly supplying the ``Loader=ruamel.yaml.Loader``
    argument, will also prevent it from being issued. You should however consider
    using ``safe_load()``, ``safe_load_all()`` if your YAML input does not use tags.
  - allow adding comments before and after keys (based on
    `StackOveflow Q&A <http://stackoverflow.com/a/40705671/1307905>`_  by
    `msinn <http://stackoverflow.com/users/7185467/msinn>`_)

(0.12.18) 2016-11-16:
  - another fix for numpy (re-reported independently by PaulG & Nathanial Burdic)

(0.12.17) 2016-11-15:
  - only the RoundTripLoader included the Resolver that supports YAML 1.2
    now all loaders do (reported by mixmastamyk)

(0.12.16) 2016-11-13:
  - allow dot char (and many others) in anchor name
    Fix issue 72 (reported by Shalon Wood)
  - |
    Slightly smarter behaviour dumping strings when no style is
    specified. Single string scalars that start with single quotes
    or have newlines now are dumped double quoted "'abc\nklm'" instead of

      '''abc

        klm'''

(0.12.14) 2016-09-21:
 - preserve round-trip sequences that are mapping keys
   (prompted by stackoverflow question 39595807 from Nowox)

(0.12.13) 2016-09-15:
 - Fix for issue #60 representation of CommentedMap with merge
   keys incorrect (reported by Tal Liron)

(0.12.11) 2016-09-06:
 - Fix issue 58 endless loop in scanning tokens (reported by
   Christopher Lambert)

(0.12.10) 2016-09-05:
 - Make previous fix depend on unicode char width (32 bit unicode support
   is a problem on MacOS reported by David Tagatac)

(0.12.8) 2016-09-05:
   - To be ignored Unicode characters were not properly regex matched
     (no specific tests, PR by Haraguroicha Hsu)

(0.12.7) 2016-09-03:
   - fixing issue 54 empty lines with spaces (reported by Alex Harvey)

(0.12.6) 2016-09-03:
   - fixing issue 46 empty lines between top-level keys were gobbled (but
     not between sequence elements, nor between keys in netsted mappings
     (reported by Alex Harvey)

(0.12.5) 2016-08-20:
  - fixing issue 45 preserving datetime formatting (submitted by altuin)
    Several formatting parameters are preserved with some normalisation:
  - preserve 'T', 't' is replaced by 'T', multiple spaces between date
    and time reduced to one.
  - optional space before timezone is removed
  - still using microseconds, but now rounded (.1234567 -> .123457)
  - Z/-5/+01:00 preserved

(0.12.4) 2016-08-19:
  - Fix for issue 44: missing preserve_quotes keyword argument (reported
    by M. Crusoe)

(0.12.3) 2016-08-17:
  - correct 'in' operation for merged CommentedMaps in round-trip mode
    (implementation inspired by J.Ngo, but original not working for merges)
  - iteration over round-trip loaded mappings, that contain merges. Also
    keys(), items(), values() (Py3/Py2) and iterkeys(), iteritems(),
    itervalues(), viewkeys(), viewitems(), viewvalues() (Py2)
  - reuse of anchor name now generates warning, not an error. Round-tripping such
    anchors works correctly. This inherited PyYAML issue was brought to attention
    by G. Coddut (and was long standing https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=515634)
    suppressing the warning::

        import warnings
        from ruamel.yaml.error import ReusedAnchorWarning
        warnings.simplefilter("ignore", ReusedAnchorWarning)

(0.12.2) 2016-08-16:
  - minor improvements based on feedback from M. Crusoe
    https://bitbucket.org/ruamel/yaml/issues/42/

(0.12.0) 2016-08-16:
  - drop support for Python 2.6
  - include initial Type information (inspired by M. Crusoe)

(0.11.15) 2016-08-07:
  - Change to prevent FutureWarning in NumPy, as reported by tgehring
    ("comparison to None will result in an elementwise object comparison in the future")

(0.11.14) 2016-07-06:
  - fix preserve_quotes missing on original Loaders (as reported
    by Leynos, bitbucket issue 38)

(0.11.13) 2016-07-06:
  - documentation only, automated linux wheels

(0.11.12) 2016-07-06:
  - added support for roundtrip of single/double quoted scalars using:
    ruamel.yaml.round_trip_load(stream, preserve_quotes=True)

(0.11.10) 2016-05-02:

- added .insert(pos, key, value, comment=None) to CommentedMap

(0.11.10) 2016-04-19:

- indent=2, block_seq_indent=2 works as expected

(0.11.0) 2016-02-18:
  - RoundTripLoader loads 1.2 by default (no sexagesimals, 012 octals nor
    yes/no/on/off booleans

(0.10.11) 2015-09-17:
- Fix issue 13: dependency on libyaml to be installed for yaml.h

(0.10.10) 2015-09-15:
- Python 3.5 tested with tox
- pypy full test (old PyYAML tests failed on too many open file handles)

(0.10.6-0.10.9) 2015-09-14:
- Fix for issue 9
- Fix for issue 11: double dump losing comments
- Include libyaml code
- move code from 'py' subdir for proper namespace packaging.

(0.10.5) 2015-08-25:
- preservation of newlines after block scalars. Contributed by Sam Thursfield.

(0.10) 2015-06-22:
- preservation of hand crafted anchor names ( not of the form "idNNN")
- preservation of map merges ( <<< )

(0.9) 2015-04-18:
- collections read in by the RoundTripLoader now have a ``lc`` property
  that can be quired for line and column ( ``lc.line`` resp. ``lc.col``)

(0.8) 2015-04-15:
- bug fix for non-roundtrip save of ordereddict
- adding/replacing end of line comments on block style mappings/sequences

(0.7.2) 2015-03-29:
- support for end-of-line comments on flow style sequences and mappings

(0.7.1) 2015-03-27:
- RoundTrip capability of flow style sequences ( 'a: b, c, d' )

(0.7) 2015-03-26:
- tests (currently failing) for inline sequece and non-standard spacing between
  block sequence dash and scalar (Anthony Sottile)
- initial possibility (on list, i.e. CommentedSeq) to set the flow format
  explicitly
- RoundTrip capability of flow style sequences ( 'a: b, c, d' )

(0.6.1) 2015-03-15:
- setup.py changed so ruamel.ordereddict no longer is a dependency
  if not on CPython 2.x (used to test only for 2.x, which breaks pypy 2.5.0
  reported by Anthony Sottile)

(0.6) 2015-03-11:
- basic support for scalars with preserved newlines
- html option for yaml command
- check if yaml C library is available before trying to compile C extension
- include unreleased change in PyYAML dd 20141128

(0.5) 2015-01-14:
- move configobj -> YAML generator to own module
- added dependency on ruamel.base (based on feedback from  Sess
  <leycec@gmail.com>

(0.4) 20141125:
- move comment classes in own module comments
- fix omap pre comment
- make !!omap and !!set take parameters. There are still some restrictions:
  - no comments before the !!tag
- extra tests

(0.3) 20141124:
- fix value comment occuring as on previous line (looking like eol comment)
- INI conversion in yaml + tests
- (hidden) test in yaml for debugging with auto command
- fix for missing comment in middel of simple map + test

(0.2) 20141123:
- add ext/_yaml.c etc to the source tree
- tests for yaml to work on 2.6/3.3/3.4
- change install so that you can include ruamel.yaml instead of ruamel.yaml.py
- add "yaml" utility with initial subcommands (test rt, from json)

(0.1) 20141122:
- merge py2 and py3 code bases
- remove support for 2.5/3.0/3.1/3.2 (this merge relies on u"" as
  available in 3.3 and . imports not available in 2.5)
- tox.ini for 2.7/3.4/2.6/3.3
- remove lib3/ and tests/lib3 directories and content
- commit
- correct --verbose for test application
- DATA=changed to be relative to __file__ of code
- DATA using os.sep
- remove os.path from imports as os is already imported
- have test_yaml.py exit with value 0 on success, 1 on failures, 2 on
  error
- added support for octal integers starting with '0o'
  keep support for 01234 as well as 0o1234
- commit
- added test_roundtrip_data:
  requirest a .data file and .roundtrip (empty), yaml_load .data
  and compare dump against original.
- fix grammar as per David Pursehouse:
  https://bitbucket.org/xi/pyyaml/pull-request/5/fix-grammar-in-error-messages/diff
- http://www.json.org/ extra escaped char \/
  add .skip-ext as libyaml is not updated
- David Fraser: Extract a method to represent keys in mappings, so that
  a subclass can choose not to quote them, used in repesent_mapping
  https://bitbucket.org/davidfraser/pyyaml/
- add CommentToken and percolate through parser and composer and constructor
- add Comments to wrapped mapping and sequence constructs (not to scalars)
- generate YAML with comments
- initial README