Revision history for Object-Pad

0.821   2025-07-12
        [CHANGES]
         * Don't apply implied pragmata on `class` or `role` keywords if the
           imported version is 0.821 or above
         * Consistently refer to `BUILD`, `ADJUST` and `APPLY` as phasers, not
           blocks

        [BUGFIXES]
         * Ensure that methods of lexical classes are actually able to use
           lexical variables (RT168139)

0.820   2025-02-26
        [BUGFIXES]
         * Account for perl 5.41.9's GV-less stash optimisation (RT159823)

0.819   2025-01-10
        [CHANGES]
         * Initial experimental attempt to support lexical `my class` syntax
         * Neater, smaller `hax/` files by squashing out code guarded on
           versions of Perl before 5.18

0.818   2024-12-23
        [BUGFIXES]
         * Ensure that `method :common` works with the new `OP_ARGELEM` code
           in the signature handling code (RT158048)

0.817   2024-12-20
        [CHANGES]
         * Initial attempt at supporting an `:abstract` attribute on classes.
           Similar to roles but much simpler and easier to implement
         * Much internal reärrangement of the way OP_METHSTART is set up, to
           hopefully allow more seamless integration with upcoming core perl
           `faster-signatures` branch work

0.816   2024-11-25
        [CHANGES]
         * Rewrote module introduction documentation, emphasising the relating
           to core perl 'class' feature and `Feature::Compat::Class`
         * Added a documentation file, giving a guide to migrating from
           classical Perl to `Object::Pad`

        [BUGFIXES]
         * Fix for t/82devel-mat-dumper-helper.t should require `Devel::MAT`
           v0.53 or later, in case DMD writes a file in format version 0.6
           (RT157189)

0.815   2024-11-13
        [CHANGES]
         * Initial experiment at adding `APPLY` phaser blocks to roles

0.814   2024-09-20
        [CHANGES]
         * Depend on `XS::Parse::Sublike` v0.25 because of RT155630 bugfix
         * Document and test the operation of `my method`

        [BUGFIXES]
         * Don't segfault when `->get_direct_method` fails to find the
           requested method

0.813   2024-09-03
        [CHANGES]
         * Removed the `has` keyword; it now immediately throws a compiletime
           error

        [BUGFIXES]
         * Ensure that the RHS of a field init expression permits any kind of
           listexpr, including `( VAL ) x COUNT`
         * Fix some docs typoes (thanks Nick Morrott) (RT155106)

0.812   2024-08-29
        [BUGFIXES]
         * Fix for perl 5.41.3, when `SAVEt_LONG` was removed

0.811   2024-08-21
        [CHANGES]
         * Accept requesting additional attributes to the
           `$classmeta->add_field` MOP method
         * XS API changes:
            + `get_obj_fieldsv()` does not need to take a ClassMeta argument
            + Added `mop_field_get_class()`
            + Added `get_field_for_padix()`

0.810   2024-08-10
        [CHANGES]
         * Use `File::ShareDir` for storing .h include file, rather than
           storing the contents in the `__DATA__` section of the build helper
         * Added field hook function `gen_valueassert_op`
         * Warn when enabling all experiments at once with an unqualified
           `:experimental` import

        [BUGFIXES]
         * Don't attempt to reserve the embedding slot in the pad twice when
           making roles under composed_adjust (RT154494)
         * Ensure that field variables are not visible at compiletime of
           :common methods (RT154639)

0.809   2024-07-14
        [CHANGES]
         * Experimental attempt at supporting anonymous `class` syntax
         * Add an extra debugging aid in the form of "linnets", canary-like
           values added to every struct and checked on pointer casts

        [BUGFIXES]
         * Do not create a `new` constructor method for roles, only classes
         * Ensure perl doesn't attempt to free() a non-malloced pointer when
           deleting a method of an invokable role (RT152793)
         * Ensure that `Object::Pad::MOP::Class->for_class` is not confused by
           non-OP subclasses
         * Make sure not to embed CVs of `:common` methods because that will
           upset any lexical or pad temporary at pad index 3

0.808   2023-12-28
        [CHANGES]
         * Added `Object::Pad::MOP::Class->try_for_class`
         * Nicer error message when calling `->for_class` on a package not
           implemented using Object::Pad

        [BUGFIXES]
         * Avoid adding `Object::Pad::UNIVERSAL` to the `@ISA` array more than
           once (RT150794)

0.807   2023-12-11
        [CHANGES]
         * Added `inherit` and `apply` keywords in an attempt to make
           subclassing and role-application more flexible in future
         * Experimental new ability to "import" fields from superclasses into
           subclasses, permitting subclasses to interact with base class
           fields directly
         * Allow setting the `OBJECTPAD_FLAG_ATTR_*_VALUE` flags when
           registering a custom attribute via the Perl-level MOP API

0.806   2023-11-14
        [CHANGES]
         * Allow field initialiser expressions to see the values of other
           fields already declared

0.805   2023-10-20
        [CHANGES]
         * Added an experimental feature to compose all ADJUST blocks into a
           single CV
         * Removed experimental warning from `ADJUST :params`

        [BUGFIXES]
         * Don't crash the `Devel::MAT::Dumper` helper if a class does not
           have a parammap (RT150151)

0.804   2023-10-04
        [CHANGES]
         * Add `:repr(pvobj)` for Perl 5.38+
         * Much internal code adjustment to support instances not backed by
           `SVt_PVAV`

        [BUGFIXES]
         * Fix the METHSTART_CONTAINS_FIELD_BINDINGS optimisation that had been
           recently broken, restoring its performance gains

0.803   2023-09-20
        [CHANGES]
         * Add `:repr(keys)` to use one hash key per field
         * Performance improvements to constructor:
            + Use `av_*_simple()` functions when operating on internal AVs
            + Don't bother calling the universal `->BUILDARGS` method if the
              class doesn't override it
            + Calculate the argument count just once

0.802   2023-08-22
        [CHANGES]
         * Internal XS-level changes:
            + Generate the basic accessor ops directly before invoking the
              gen_accessor_ops chain, ensuring more reliable ordering
            + Renamed the `post_initfields` field hook to `post_makefields` to
              better reflect when it actually runs
         * Removed the special-case warning about `method BUILD`
         * Added docs to point out that `ADJUST` blocks see method-like field
           lexicals

0.801   2023-08-10
        [CHANGES]
         * Warn at compiletime if `ADJUST` blocks perform out-of-block control
           flow. This warning will become a compiletime error in a later
           version
         * Added `mop_class_get_attribute()` and
           `mop_class_get_attribute_values()` to C-level API
         * Removed the old `ClassHook->hookdata` and `FieldHook->hookdata`
           variable aliases

        [BUGFIXES]
         * A better `sub VERSION` that works as a more transparent wrapper
           (RT149357)

0.800   2023-08-09
        [CHANGES]
         * Switched to three-digit version numbering
         * Removed experimental warnings from non-constant field initialiser
           expressions
         * Emit deprecation warnings at compiletime from `has` keyword
         * Expanded documentation about the implied pragmata changes, which
           will likely be removed entirely in a later version.
         * Emit a warning if implied strict/warnings was enabled, conditional
           on `use Object::Pad` with this version number or later.

0.79    2023-05-09
        [CHANGES]
         * Swap all unit tests from `Test::More` to `Test2::V0`
         * Support `goto LABEL` entirely within a field initialiser block

        [BUGFIXES]
         * Docs fix for implied method names to match names of fields
           (RT146092)
         * Hide bleadperl's suspended compcv macros when redefining our own of
           the same name

0.78    2023-01-12
        [BUGFIXES]
         * Don't complain about empty-list field initialisers being
           non-constant (related to RT145618)
         * Define more configuration options for `Feature::Compat::Class`

0.77    2022-12-19
        [BUGFIXES]
         * Fix C compiler errors and warnings
            + Neater handling of OP_NULL in optrees; avoids error of a case
              label applied to a declaration, which upsets non-gcc compilers
            + Use PTR2UV / NUM2PTR pairs instead of plain casting

0.76    2022-12-16
        [CHANGES]
         * No longer consider `field VAR = CONST` experimental for constant
           expressions
         * Make field assignment and `ADJUST :params` slightly more efficient
           by stealing new OP_HELEMEXISTSOR op from upcoming perl version
         * Defined new ABI version 0.76
            + Adds `pre_seal` and `post_seal` functions for class hooks 

0.75    2022-12-14
        [CHANGES]
         * Support fields using `//=` and `||=` defaulting operators, to match
           the core perl `class` feature
         * Define more configuration options for `Feature::Compat::Class`

0.74    2022-12-04
        [BUGFIXES]
         * Ensure that all struct fields are initialised after Newx(), by
           using a C99-style struct assignment, ensuring no uninitialised
           behaviour (RT145289)

0.73    2022-12-03
        [CHANGES]
         * Accept `field VAR = EXPR;` syntax; evaluated within constructor
           similarly to block form
         * Generally prefer `field` over `has` in docs, unit tests, etc...
         * Long-deprecated `extends` and `implements` keywords are now
           immediate compile-time failures
         * Extended the C-level extension API
            + Added `get_compclassmeta()`
            + Added `mop_class_add_method_cv()` and `mop_class_get_name()`
            + Optional integration with XS::Parse::Keyword via the addition
              of the `OPXKP_*` macros

        [BUGFIXES]
         * Account for bleadperl's slightly changed warning message of
           "bareword found ..."

0.72    2022-11-30
        [CHANGES]
         * Accept `//=` and `||=` in named signature-like syntax for
           `ADJUST :params` blocks
         * Added `__CLASS__`
         * Deprecate use of params hashref in `ADJUST` blocks; needs to be
           written as `ADJUSTPARAMS`, which is not longer exactly synonymous
           with `ADJUST`

0.71    2022-11-01
        [CHANGES]
         * Add a =head2 heading to docs on `ADJUST :params` for ease of
           linking
         * Support latest blead-perl which adds the xV_FROM_REF macros

        [BUGFIXES]
         * Make sure to deref the CODE reference to ->add_method before
           stuffing it into the GV (RT144975)
         * Avoid C99-style for() loop variable, to keep older MSWin32
           compilers happy

0.70    2022-10-29
        [CHANGES]
         * Added `ADJUST :params`, which permits named parameters to ADJUST
           blocks (currently experimental)

0.69    2022-10-25
        [CHANGES]
         * Internal tidying to the way the initfields stage of the constructor
           works
         * Support for Feature::Compat::Class to enable the :isa class
           attribute alone

0.68    2022-08-13
        [BUGFIXES]
         * Wording fix in new Object::Pad::MetaFunctions docs
         * Avoid label at end of compound statement (RT144005)

0.67    2022-08-12
        [CHANGES]
         * Added `Object::Pad::MetaFunctions` to contain some introspection
           and reflection helper functions
         * Avoid writing the rather silly-sounding `field $field` in docs;
           use single-letter field names like `$x` or `$f` instead

0.66    2022-07-07
        [CHANGES]
         * Improved performance on perl 5.22 onwards, by merging the operation
           of the individual pp_fieldpad ops into the main pp_methstart op
         * Prepare compatibility with core's `use feature 'class'`:
            + Support `field` keyword as a synonym of `has`, though without
              immediate EXPR version
            + Merge meaning of `ADJUST` and `ADJUSTPARAMS`; give all such
              blocks a params hashref. `ADJUSTPARAMS` is now just a synonym
         * Print "discouraged" warnings on `requires` keyword
         * Print deprecation warnings on `isa` and `does` subkeywords
         * Added list-returning ->get_attribute_values() accessor to
           Object::Pad::MOP::Field
         * Deleted legacy XS symbols relating to "slot" from before it was
           renamed to "field"

0.65    2022-05-10
        [CHANGES]
         * Document the required version for :experimental tags
         * Mention the new Devel::MAT::Tool::Object::Pad in docs

        [BUGFIXES]
         * Update cv_copy_flags() for SvPADTMP fix; related to RT142468

0.64    2022-04-02
        [CHANGES]
         * Improvements to `:experimental` import tag (RT141801):
            + Support multiple experiments at once
            + Make sure to still enable the default keywords
         * Much better integration with `Devel::MAT::Dumper`:
            + Export complete C-level structures and magic VTBL root
         * Adjusted wording of "MOP API is experimental" so it doesn't refer
           to a package that doesn't actually exist (RT141801)

0.63    2022-03-07
        [CHANGES]
         * Deleted long-deprecated Object::Pad->begin_class
         * No longer declare the entire module as "experimental"
         * Add experimental warnings to still-experimental features; recognise
           `:experimental` import tags to silence them

        [BUGFIXES]
         * Ensure that generated accessors work correctly regardless of the
           prevailing package when they were generated (RT141599)
         * Ensure that classes and accessors can be generated entirely outside
           of a BEGIN block (RT141677)

0.62    2022-03-01
        [CHANGES]
         * Add "common" methods:
            + Implement `:common` attribute for methods
            + Take 'common' argument to `$metaclass->add_method`
            + Added `$metamethod->is_common` accessor
         * Don't require a terminating semicolon after `has $field { EXPR }`

        [BUGFIXES]
         * Better handling of role method embeddings that include lexical
           captures (RT141483)

0.61    2022-02-16
        [CHANGES]
         * Added Object::Pad::MOP::Class->create_{class,role}
         * Added $metaclass->seal (RT141294)
         * Added $metaclass->add_required_method and ->required_method_names
           (RT141314)
         * Accept bodyless `method NAME;` declarations to declare a required
           role method

        [BUGFIXES]
         * Assert when compclassmeta->name doesn't match PL_curstname (RT141293)

0.60    2022-02-01
        [CHANGES]
         * The Great Slot/Field Rename:
            + "slot" is now called "field"; all perl-visible and XS API has
              been renamed. Various back-compatibility redirections exist for
              most of the parts used by other distributions.
         * Print a deprecation warning on the legacy 'implements' and
           'extends' keywords
         * No longer supports the hooks API from pre-v57
         * Perform unit testing using Data::Dumper instead of Data::Dump to
           reduce non-core test_requires dependencies

0.59    2021-12-15
        [CHANGES]
         * Support lexical methods, stored in lexical variables

        [BUGFIXES]
         * Check :strict(params) even without any :param slots or ADJUSTPARAM
           blocks (RT140314)
         * Docs updates to improve searchability (RT140141)
         * Don't fiddle with PL_curcop on non-DEBUGGING builds to avoid
           disturbing caller() output (RT139408)

0.58    2021-11-25
        [CHANGES]
         * Trim whitespace within :attribute values (RT140109)

        [BUGFIXES]
         * Early seal on outer class when deriving an inner subclass of it
         * Store the real slotix in fasthook cache, not its index within the
           direct_slots AV

0.57    2021-11-18
        [CHANGES]
         * Defined new ABI version for class/slot hooks
            + Adds `funcdata` at registration and callback time
            + Adds MOP accessor functions for slotmeta default SV
         * Added :isa() and :does() class attributes; encourage those rather
           than the older keyword style
         * Added more MOP methods:
            + $classmeta->direct_methods, ->get_direct_method
            + $classmeta->all_methods, ->get_method
            + $slotmeta->has_attribute, ->get_attribute_value
         * Added Object::Pad::MOP::SlotAttr, allowing pure-perl slot
           attributes that provide simple metadata storage

0.56    2021-10-22
        [CHANGES]
         * Support roles inheriting from (possibly-multiple) other roles
           (RT139772)
         * Recognise `accessor` argument to $classmeta->add_slot
         * Add some more MOP methods:
            + $classmeta->direct_roles
            + $classmeta->all_roles
            + $slotmeta->sigil

        [BUGFIXES]
         * Fix an uninitialised memory warning from valgrind to do with class
           creation
         * Quiet the compiler warnings about hv_fetch's key argument maybe
           being NULL

        Development time for this release was sponsored by Perl-Verein Schweiz

0.55    2021-10-11
        [CHANGES]
         * Support :reader and :writer on array and hash slots (RT139647)

        [BUGFIXES]
         * Complain on attempt to invoke constructor of a class that is not
           yet complete (RT139664)
         * Ensure that psotslots and construct slothooks still run for
           superclasses and applied roles (RT139665)

        Development time for this release was sponsored by Deriv

0.54    2021-10-07
        [CHANGES]
         * Support slot initialiser blocks; don't invoke blocks for values
           passed by :param
         * Support slot default values on non-scalars

        Development time for this release was sponsored by Deriv

0.53    2021-09-29
        [CHANGES]
         * Support null-or-unary reader/writer accessors, called simply
           `:accessor`

        [BUGFIXES]
         * Avoid some C99'isms which upset Windows compilers
         * Remember to register pp_weaken() as a custom op
         * Account for the newer OP_ARGCHECK aux structure of perl 5.31.5
         * Set correct XPK_LEXVARNAME() type (related to RT139444)

0.52    2021-08-25
        [BUGFIXES]
         * Remember to actually enable `use warnings` (RT139027)
         * Permit slotmeta value lookup on roles applied to instances
           (RT138927)
         * Ensure `ADJUSTPARAMS` on superclass still works on subclasses that
           don't add an `ADJUSTPARAMS` themselves

        Development time for this release was sponsored by Perl-Verein Schweiz

0.51    2021-08-10
        [CHANGES]
         * Added `ADJUSTPARAMS` blocks
         * Allow `apply` hook functions to modify the hookdata value that gets
           stored by the hook
         * Store method name data in accessor generator hooks, so other
           modules can reliably find it
         * Clarify in SYNOPSIS that the example requires perl 5.26 because of
           signatures; also provide another copy that doesn't (RT138578)

        [BUGFIXES]
         * Don't segfault on colliding :param names (RT138633)
         * Don't ship the authoring test xt/99exported-symbols.t (RT138634)

        Development time for this release was sponsored by Perl-Verein Schweiz

0.50    2021-08-08
        [CHANGES]
         * Provide Object::Pad::ExtensionBuilder to assist 3rd party extension
           module building
         * Generally tidy up the exposed `object_pad.h` file to remove some
           definitions we don't want to make public
         * Add ABI version constants and fields in exposed hook function
           structures for (hopefully) better forward compatibility
         * Add the concept of class hooks, analogous to slot hooks

        Development time for this release was sponsored by Deriv

0.49    2021-08-06
        [CHANGES]
         * Provide $XSAPI_VERSION to allow non-API-breaking changes to be made
           without disturbing compiled 3rd party modules
         * Better searching for Pad.so in t/99exported-symbols.t
           (thanks ppisar@redhat.com) (RT138320)
         * Gain a (small) runtime performance boost by remembering to set
           PERL_NO_GET_CONTEXT

        [BUGFIXES]
         * Ignore some internal linker symbols in t/99exported-symbols.t
           (RT138315)
         * Remember to bump the version requirement of XS::Parse::Keyword in
           the XS source (RT138318)
         * Make slots visible to string-eval(), PadWalker, perl -d, etc..
           (RT138399)

        Development time for this release was partly sponsored by
        Perl-Verein Schweiz

0.48    2021-08-02
        [CHANGES]
         * Added features to slothooks:
            + New hooks `.seal_slot` and `.post_construct`
            + `.post_initslot` now runs earlier before `:param`
            + Added a MOP function to query slot attributes
            + Set a minimal pad during construction-time slot hooks
         * Ensure that `:param` logic in constructor invokes setmagic

        [BUGFIXES]
         * Fixed many classes of UTF-8 bug on class/slot/method names
           (RT138073)
         * Fixed segfault caused by runtime generation of roles (RT137952)

        Development time for this release was sponsored by Deriv and
        Perl-Verein Schweiz

0.47    2021-07-29
        [CHANGES]
         * Large internal rewrites
            + Split code among several smaller files instead of one giant
              lib/Object/Pad.xs
            + Rewrite the way that slot attributes work; allow an
              externally-visible plugin-type system of hooks
         * Removed `->param_name` and `->has_param` MOP::Slot accessors

        Development time for this release was sponsored by Perl-Verein Schweiz

0.46    2021-07-21
        [CHANGES]
         * Accept reader, writer, mutator and weak as `->add_slot` parameters
         * Document the `O:P:MOP::Class->begin_class` method
         * Add `O:P:MOP::Class->begin_role`
         * Enable `-DDEBUGGING` if building via debugperl

        Development time for this release was sponsored by Deriv

0.45    2021-07-17
        [BUGFIXES]
         * Don't give role embedding information a pad name or
           Future::AsyncAwait will break it (RT137649)
         * Make sure that `parammeta->is_weak` is initialised even for params
           applied via roles (RT137751)

0.44    2021-07-15
        [CHANGES]
         * Added `:weak` slot attribute
         * Adjusted some documentation headings for better generation of HTML
           anchors on metacpan.org

        Development time for this release was sponsored by Oetiker+Partner AG

0.43    2021-07-03
        [CHANGES]
         * Initial implementation of `ADJUST` blocks, without params
         * Better docs about ordering of stages of constructor
         * Initial attempt at (temporary) `:struct(params)` class attribute
         * Add O:P:MOP::Class and ::Slot support for slot params

        Development time for this release was sponsored by Oetiker+Partner AG

0.42    2021-07-01
        [CHANGES]
         * Expose `$slotmeta->has_param` API
         * Clarify in docs that `:param` happens before `BUILD`
         * Remove the word "very" from "very experimental" in introduction
           docs paragraph
         * Add `$classmeta->slots`

        [BUGFIXES]
         * Make sure to embed params from roles correctly (RT136869)
         * Use `XS_INTERNAL()` rather than `static XS()` to (maybe?) keep
           cygwin happy

        Development time for this release was sponsored by Oetiker+Partner AG

0.41    2021-06-21
        [CHANGES]
         * Recognise `:param` on slots, assign automatically from constructor,
           check for required parameters
         * Accept `isa` as a synonym for `extends`, and `does` as a synonym
           for `implements`
         * No longer allow `method BUILD`

        [BUGFIXES]
         * Complain about a lack of NAME for `class` (related to RT136798)

        Development time for this release was sponsored by Oetiker+Partner AG

0.40    2021-06-02
        [CHANGES]
         * Updated for XS::Parse::Keyword v0.06
         * Silence the -Wunused-variable warning about PL_savetype_name
         * Yield PL_sv_yes from `class` statements so as to keep `require`
           happy (RT136701)

0.39    2021-05-24
        [CHANGES]
         * Update parsing logic to use XS::Parse::Keyword

0.38    2021-05-14
        [CHANGES]
         * Added Object::Pad::MOP::Class->for_class and ->for_caller
           constructors
         * Provide a generated ->DOES method on each class to account for
           applied roles (RT136462)

        [BUGFIXES]
         * Make sure that generated accessors are recorded in the metaclass as
           real methods, ensuring role application includes them (RT136507)

0.37    2021-04-01
        [BUGFIXES]
         * Don't get confused by sub signature parameters of the same name as
           slot variables (RT134456)
         * Don't crash if extends/implements package names are missing or
           malformed (RT134827)
         * Reject requests to make accessors with invalid identifier names
           (RT134795)

0.36    2021-02-19
        [CHANGES]
         * Added $classmeta->compose_role() (RT134261)
         * Docs updates
            + Point out that slot variables can also be exposed via :reader etc
            + Reördering for better reading
         * Always add accessor method name to "Too (many/few) arguments"
           messages even on older perls

        [BUGFIXES]
         * Fix unit tests for change of argcheck message format in perl 5.33.6
           (RT134074)

0.35    2020-12-28
        [CHANGES]
         * Permit roles to request their methods still be directly invokable,
           to provide back/forward compatibility during code migration

        [BUGFIXES]
         * More sanity checking around `extends` and `implements` keywords
         * Better complaint about non-invokable methods directly from roles
         * Workaround for string buffer swipe of stack temporaries in
           O:P::MOP::Class->add_method()

0.34    2020-11-04
        [CHANGES]
         * Reword the "experimental warning" at the top of the docs

        [BUGFIXES]
         * Use named enum for repr type (thanks ilmari) (RT133354)
         * Use named structs so pahole can see them (thanks ilmari) (RT133355)
         * Make sure to set the CvGV of embedded CVs of methods imported from
           roles
         * Fixed a crash case on Perl 5.18 and 5.20 involving the
           PadnameOUTER() flag when fixing up PARENT_PAD_INDEX() (RT132814)

0.33    2020-09-16
        [CHANGES]
         * Roles can now have data slots
         * `use v5.14` in all files

        [BUGFIXES]
         * pp_sv() needs to EXTEND() before PUSH()
         * Avoid SEGV if ->begin_class is called without PL_parser set
           (RT133258)
         * Defer sealing of derived classes until their base class is sealed
           (RT133190)

0.32    2020-08-19
        [CHANGES]
         * Initial attempt at roles, which can compose new methods into
           classes. No support yet for roles with data slots
         * Support compiletime declaration of `requires` methods

0.31    2020-06-30
        [CHANGES]
         * Don't emit a named method for BUILD blocks
            + Enables subclassing of Moo classes
         * Begin documenting the (double-experimental) Object::Pad::MOP API

        [BUGFIXES]
         * Parser fix for `class NAME VERSION extends ...` without a linefeed
           (RT132903)
         * Placate some compiler warnings of uninitialised values
         * Find a different way to trigger class sealing which doesn't depend
           on `free` magic of hinthash values, in order to avoid core perl bug
             https://github.com/Perl/perl5/issues/17903
         * Various small fixes to keep -DDEBUGGING perl happy

0.30    2020-06-20
        [CHANGES]
         * Make generated writer methods return $self, for convenient chaining
         * Apply argument checking to generated accessor methods
         * Improved performance of constructor, by storing BUILD blocks
           directly in the class metadata, avoiding runtime method lookup
         * Updates for XS::Parse::Sublike 0.10

0.29    2020-06-16
        [CHANGES]
         * Accept :override attribute on methods
         * Accept runtime expressions as `has $slot = DEFAULT`
         * Added Devel::MAT::Dumper::Helper support

        [BUGFIXES]
         * Fix various compiler warnings

0.28    2020-06-14
        [BUGFIXES]
         * Declare correct version of XS::Parse::Sublike in configure_requires
           as we need it at Build.PL time
         * Fix printf formats for SLOTOFFSET arguments
         * Fix github URL in docs

0.27    2020-06-13
        [CHANGES]
         * Support :reader :writer :mutator attributes on slot variables, to
           automatically generate accessor methods for them
         * Accept `BUILD { ... }` without the `method` keyword. Suggest this
           as usual style. Discourage the `method` form.
         * Updated advice to module authors on how to declare package/VERSION
           sufficient to keep toolchain modules happy

0.26    2020-04-27
        [CHANGES]
         * Sanity-checking of ->add_slot names
         * Permit "anonymous" slots with sigils but no names; accessed only
           via $slotmeta->value
         * Warn when $self lexical is shadowed (partly fixes RT132428)

        [BUGFIXES]
         * Ensure to run GETMAGIC on ->add_slot names
         * Removed extranous and undeclared `use Devel::MAT::Dumper` from unit
           tests

0.25    2020-04-24
        [CHANGES]
         * Further expanded the (undocumented) MOP API
            + Added beginnings of O:P:MOP::Class, O:P:MOP::Slot sufficient to
              create classes and add slots and methods to them

        [BUGFIXES]
         * Ensure that anonymous methods can perform lexical captures from
           outside scopes (RT132178)
         * Ensure that subclasses without BUILD methods don't double invoke
           that of their superclass
         * Ensure a method's optree begins with OP_NEXTSTATE as debug tools
           may rely on this (RT132413)
         * Don't rely on Test::MemoryGrowth at test time, so tests can still
           pass on non-Linux

0.24    (bad MANIFEST)

0.23    2020-04-21
        [CHANGES]
         * Add another new :repr type of autoselect, which chooses the most
           appropriate type for the situation

0.22    2020-04-17
        [CHANGES]
         * Allow classes to request their representation type using new
           class attribute :repr - choices are native(default), HASH, magic

0.21    2020-04-15
        [CHANGES]
         * Added Object::Pad->begin_class() (undocumented)
           (mostly fixes RT132337 and RT132338)
         * Improved performance of OP_SLOTPAD
         * Handle UTF-8 package names more correctly

        [BUGFIXES]
         * Fix memory leaks related to OP_METHSTART (RT132332)

0.20    2020-04-10
        [CHANGES]
         * Update suggested style for methods with signatures to put
           whitespace before open paren
         * Use core's `feature "indirect"` in preference to indirect.pm where
           available (perl 5.31.9 onwards)

        [BUGFIXES]
         * Fix for segfault when compiling inner anon methods inside other
           methods (RT132321)

0.19    2020-04-04
        [CHANGES]
         * More sanity checking of HASH-based foreign superclass constructor
         * More unit testing of reliable destruction of constructor and
           BUILDARGS arguments

        [BUGFIXES]
         * Allow classic Perl superclass constructors to invoke methods on
           instances (RT132263)
         * Fix SP pointer discipline during method calls in generated
           constructor

0.18    2020-03-30
        [CHANGES]
         * Implement the BUILDARGS part of constructor protocol
         * Apply the :method attribute to all method subs

0.17    2020-03-27
        [CHANGES]
         * Add some style suggestions for code authors using the module
         * Updated for XS::Parse::Sublike 0.06 API

        [BUGFIXES]
         * Create a new slot pad for every method instead of reusing one;
           avoids some refcounting issues that cause segfaults (RT132249)

0.16    2020-03-26
        [CHANGES]
         * Always generate the slots AV even with no slots because otherwise
           METHSTART gets upset about no-slot subclasses
         * Capture the `async method` unit tests from Future-AsyncAwait

        [BUGFIXES]
         * Ensure that object refs or slot values don't hang around in method
           lexicals after they've returned (RT132228)
         * Use OP_STUB to ensure no-slot subclasses don't crash OP_PUSH on
           perls 5.18 to 5.22 (thanks ilmari)

0.15    2020-03-19
        [CHANGES]
         * Use XS::Parse::Sublike 0.04
            + Provides bugfixes for parameters in sub signatures with defaults

        [BUGFIXES]
         * Handle class-scoped regular lexicals and outer captures

0.14    2020-03-17
        [CHANGES]
         * Use XS::Parse::Sublike 0.02's `register_xs_parse_sublike()` ability

0.13    2020-03-15
        [CHANGES]
         * Use XS::Parse::Sublike for the bulk of the `method` parsing work

        [BUGFIXES]
         * Inline the code for Perl_package_version() because it isn't
           exported API so not actually visible on non-ELF platforms

0.12    2020-03-10
        [CHANGES]
         * Minor adjustments to order of operations in method keyword parsing
           to closer match core's parser

        [BUGFIXES]
         * Rename t/80dynamically+Object::Pad.t to use a hyphen because colons
           confuse MSWin32 (RT132087)

0.11    2020-03-07
        [CHANGES]
         * More efficient method enter on perl 5.22 onwards by detecting which
           slots are being used per method and only set those ones up

        [BUGFIXES]
         * Fix some C99isms in XS code (RT131417)
         * Avoid a C++-style comment in hax/lexer-additions.c.inc

0.10    2019-11-20
        [BUGFIXES]
         * Back-compat fixes for perl 5.16, 5.20

0.09    2019-11-20
        [CHANGES]
         * Accept optional version number for `class` declaration and
           `extends` base class
         * Provide a default `BUILDALL` method which invokes all the available
           `BUILD` methods of component packages
         * Unit-test that Syntax::Keyword::Dynamically works correctly with
           object slots and document the fact that `local` does not

        [BUGFIXES]
         * Generate the constructor as an XSUB so we can find the superclass
           for derived subclasses better and avoid an infinite recusion loop
           on double-subclassing.

0.08    2019-11-10
        [CHANGES]
         * Accept `class Name;` to introduce a toplevel class scope
         * Attempt to `require` the relevant module for `extends` if it
           doesn't appear to be loaded

0.07    2019-10-25
        [CHANGES]
         * Allow subclassing of non-Object::Pad base classes, provided they
           are HASH-based
        [BUGFIXES]
         * Correct handling of UTF-8 package and slot names (thanks ilmari)

0.06    2019-10-23
        [CHANGES]
         * First attempt at `has $slot = DEFAULT` expressions. Only accepts
           compiletime constants and only on scalar slots

0.05    2019-10-20
        [CHANGES]
         * Implement single-inheriance subclassing

0.04    2019-10-19
        [CHANGES]
         * Croak on attempts to invoke methods on non-instances, non-derived
           classes, etc...
         * Support perls back to 5.16 by various trickery
         * Store array and hash slot variables via RV so the instances are
           well-behaved as perl data structures

0.03    2019-10-18
        [CHANGES]
         * Implement sub signatures
         * Apply automatic pragmata - strict, warnings, -indirect

0.02    2019-10-17
        [CHANGES]
         * `method name :lvalue` and (maybe) other attributes
         * Support perls back to 5.22 due to wrap_keyword_plugin hax

0.01    2019-10-17
        First version, released on an unsuspecting world.