Changes since 1.5 are documented in debian/changelog.

Release notes for deborphan 1.5 (2002-02-24T16+0200)
* No more breakage with prelink (wrong NUM_OPTIONS) (Peter Palfrader, #181311)
* Orphaner exits nicely.                            (Peter Palfrader, #163220)
* Orphaner shows new packages at the top.           (Joerg Sommer, #176424)
* Danish translation added.                         (Morten Brix Pedersen)
* Added --find-config option.                       (Suggested by Martin
                                                     Quinson, #180010)

Release notes for deborphan 1.4 (2002-12-10T13+0200)
* Orphaner now recognises all --guess-* options  (Peter Palfrader)
* Added --guess-data option.                     (Debian bug #170381)

Release notes for deborphan 1.3 (2002-07-19T11+0200)
* Free correct variable in readkeep.             (Debian bug #153319)
* Fixed possible buffer overrun in strstripchr.  (Wessel Dankers)
* Added --guess-common option.                   (Suggested by Peter Palfrader)
* "Fixed" bug in readkeep that caused EBADF.     (Debian bug #153397)
  I don't understand how my fix fixes it. But it seems to do.
* Added --zero-keep option.                      (Debian bug #153397)

Release notes for deborphan 1.2 (2002-07-14T22+0200)
* Added --guess-dummy option.     (Debian bug #141810, James Troup)
* Changed --guess-only in --help. (Debian bug #132338, Christian Kurz)
* Ignore "essential" packages     (Debian bug #96794,  Rob Black)
* Made some minor efficiency/cleanliness changes in deborphan.c
  and pkginfo.c.

Release notes for deborphan 1.1 (2002-07-10T19+0200)
* Added --purge option for orphaner.                 (Peter Palfrader)
* Added guess support for python, pike and ruby.     (Sean Perry)
* Fixed a small memory leak in LOW_MEM nextline().
* Fixed a technical call error in LOW_MEM nextline().
* Fixed two memory leaks in pkggrep().
* Fixed a bug in mustkeep() (finally remembered).
* Fixed possible buffer overflow in readkeep().
* Renamed statusopen() to debopen().
* Rewrote delkeep() to do in-memory updates.
* Added sstrsep() function in string.c.
* Implemented pkgcmp() as a macro.

Release notes for deborphan 1.0 (2001-04-28T17+0200)
* Added editkeep(8) manual page by Peter Palfrader.
* Finally remembered to fix that bug in keep.c.
* First stable release. Let's hope it stays that way.

Release notes for deborphan 0.1.25 (2001-03-28T20+0200)
* Fixed typo in configure.in (depfoster->debfoster)
* Fixed typos in NEWS (2000->2001).
* Fixed typo in manpage.
* Added --no-df-keep option (changes meaning of --df-keep).
* Listing through -L is done after all options are parsed.

Release notes for deborphan 0.1.24 (2001-02-14T17+0200)
* Actually, 0.1.23 put the keepfile in /var/lib/deborphan/.
  And it still does so.
* Added hasduplicate() function to keep.c
* Added is_library() function to pkginfo.c (for use with -s)
* Added check for location of debfoster's keepers file in
  configure (supports new /var/state/debfoster/keepers).
* Fixed bug in parseargs() which caused deborphan to read
  stdin when passing packagenames starting with '-'.
* Removed setvbuf() call. It appears to be broken in some way.
* Added 'duplicate dependency' check. i.e. 
  "Depends: libc6 (<< 1.0), libc6 (>> 0.5)" is now shown only
  once with --show-deps.
* More clear error messages for 'keep' functions.
* Added check for package's existance on -A.

Release notes for deborphan 0.1.23 (2001-01-05T21+0200)
* Defaulted location of keepfile to $prefix/var.
* Added reading of debfoster's /etc/apt/keepers.
* Added --df-keep option.
* Added check for duplicate keep-entries.
* Check for empty section in check_lib_deps.               (Peter Palfrader)
* New orphaner (also 'editkeep')                           (Peter Palfrader)

Release notes for deborphan 0.1.22 (2001-01-04T21+0200)
* Silly bug in set.c.
* Quicky release.

Release notes for deborphan 0.1.21 (2000-12-31T19+0200)
* Added option to use less memory (at the cost of speed).
* Replaced call to malloc() with xcalloc() in keep.c.
* Used parseargs() for 'search'. Hence, it now accepts stdin.
* Replaced --fake-dev by --guess-* options.
* Fixed memory leak on uninstalled packages.
* Added set.c and set.h.
* Moved get_pkg_deps into pkginfo.c, and reduced it to half its 
  length.
* Removed global variable num_deps.
* Added some stuff in deborphan.h to help compilation with 
  -ansi -pedantic.
* Fixed memory leak in file reading when compiled with !LOW_MEM.

Release notes for deborphan 0.1.20 (2000-12-31T17+0200)
* Ran indent -i4 -br -psl -ce -npcs on the source.
* Replaced occurence of 'fprintf(); exit()' with error().
* Added "keeper" support, with applicable options.
* Faster reading of the status file (full buffering).
* Removed 'dpkghold' and 'dpkghold' (obsoleted by keepers).
* Fixed bug in check_lib_deps() which caused -d to fail when
  using 'provided' packages.

Release notes for deborphan 0.1.19 (2000-12-29T20+0200)
* Cleaned up get_pkg_provides() and get_pkg_priority
* Added pkgcmp() and redid pkg_info accordingly.
* Made string_to_priority() case-insensitive.
* Removed DOUBLECHECK constant.

Release notes for deborphan 0.1.18 (2000-12-29T20+0200)
* Added --fake-dev (-D) option, as requested in Debian 
  bug #80391. It's a bit hacky.
* New orphaner (checks options).

Release notes for deborphan 0.1.17 (2000-12-21T22+0200)
* Added strhash() and hash-comparison for package names.
* Added get_pkg_info() as a replacement for some REs.
* Set types for get_pkg_* to void.
* Defaulted package->hold to 0. Only altered if -H is not 
  given.

Release notes for deborphan 0.1.16 (2000-12-19T15+0200)
* Rewrote string_to_priority(). No particular gain.          (Wessel Dankers)
* Cleaned up pkginfo.c a little bit.
* Made the reading of /var/lib/dpkg/status go faster.
* Set INPUT_BUFFER to 31. (length of "purged" status line).
* Used memory that was allocated before, but used only once.
* Changed strstripchr() for faster operation.
* Enabled support for configure's --with-VAR options.

Release notes for deborphan 0.1.15 (2000-12-19T15+0200)
* Increased the efficiency of check_lib_deps() when checking 
  specific packages (roughly twice as fast as before).
* Changed strstripchr() to void (from char *).
* Did a negligible bit of optimalization on strstripchr().
* Made regcomp() options definable at compile-time.
* Changed string_to_priority(). Now less accurate, but faster and
  compatible with new -p handling.
* Cleaned up check_lib_deps() somewhat.

Release notes for deborphan 0.1.14 (2000-12-17T19+0200)
* Added dpkghold and dpkgunhold to util/
* Added -H (--force-hold) option.
* Rewrote priority_to_string(). Not sure on the correctness now,
  but it leaked memory before in any case.
* Optimized strstripchr() a bit.
* Added DEFAULT_PRIORITY #def to config.h
* Removed MAXIMUM() macro. It made no sense.
* Changed all occurrences of xcalloc to xmalloc (minor speed increase).
* Defined some functions as 'inline'. Added inline check to configure.
* Fixed improper handling of -p (-d caused it to be ignored).

Release notes for deborphan 0.1.13 (2000-12-17T15+0200)
* Fixed several possible buffer overflow situations
* Fixed Debian bug #67423 (Lists packages still required)    (Peter Palfrader)
* Added support for the "hold" flag.
* Minor documentation update.
* Added orphaner by Goswin Brederlow and Peter Palfrader 
  to the distribution.

Release notes for deborphan 0.1.12 (2000-08-01T20+0200)
* New, faster, strstripchr()                                 (Paul Martin)
* init_pkg_regex(), init_dep_regex(), for compiling regexps
  only once.                                                 (Paul Martin)
* free_pkg_regex(), free_dep_regex(), for freeing the
  compiled regexps when we're done.
* Several speed hacks, based on first character on the line. (Paul Martin)
* Documentation typo fixed.
* Restored intl/libgettext.h and intl/po2tbl.sed.in (empty files). 
  These apparently caused building problems.

Release notes for deborphan 0.1.11 (2000-07-03T18+0200)
* Fixed a bug that caused not installed packages to be displayed
  (Debian bug 66501).

Release notes for deborphan 0.1.10 (2000-06-28T19+0200)
* Started to move to POSIX.2 regular expressions instead of regular
  libc functions. They are of not much use for now.
* Removed an #ifdef, ctype.h is now mandatory for compilation.
* Removed priority.c. 
* Added string.c (including the functions in priority.c)
* strstripchr() added in string.c for `pre-processing' lines.
* Changed functions to expect lines without spaces or newlines.
* Cleared intl/ subdirectory, there was nothing in there any way.
  The directory itself was left because automake thinks it "needs" it.
* Cleaned up the code; should compile flawlessly with gcc -Wall.
* Slightly altered get_pkg_deps(); it now needs a less clean status file.
* Moved package->install=0 to get_pkg_name. A package is now un-installed
  until proven installed.
* Discovered an odd bug. Built a quick work-around. A real fix is on
  the to do list.
* Got some of the "char *line2"s out of pkginfo.c, read-only memory is
  more appropriate in those cases.

Release notes for deborphan 0.1.9 (2000-06-28T19+0200)
* Fixed a bug, which caused deborphan to append a ')' to packages
  supplied on the command line.
* Added --no-show-section option.
* Removed AUTHORS file. I no longer seek immortality :)

Release notes for deborphan 0.1.8 (2000-06-26T01+0200)
* Gave the section some more slack.
* Some tweaking.
* NOTE: this version is totally untested. It came straight from CVS.

Release notes for deborphan 0.1.7 (2000-06-06T20+0200)
* Fixed an odd problem in get_pkg_status. Accuracy, memory usage, and speed
  have improved.
* Renamed -S to -s. And -s to -d.
* Added --show-priority (-P) option. 
* Made the output of --show-priority and --show-section look cute.
* Added priority.c (string_to_priority() and priority_to_string())
* Added option to search for user-specified packages.

Release notes for deborphan 0.1.6 (2000-06-04T19+0200)
* i18n, and dutch translation added.
* Checks added for packages in section 'oldlibs', and packages outside 'main'. 
* --show-section option added. By default implied by -a.
* Some minor changes in the code.
* Values for commandline options are declared globally.

Release notes for deborphan 0.1.5 (2000-05-17T20+0200)
* Output selection based on priority of the orphaned package (-p PRIORITY).
* Updated exit.c to include information on --all-packages (and --priority).
* Updated manual page for the new options.
* Moved some options from config.h.in to configure.in.
* config.h is no longer mandatory.
* Changed "usage" message.
* Added a bunch of ifdefs to avoid recursive headerfile loading.
* Renamed --show-all to --show-deps (makes more sense now that there is -a)

Release notes for deborphan 0.1.4 (2000-05-17T14+0200)
* Added a THANKS file.
* Debianized the package. This time, it may even work as it should.
* Moved some stuff around in the code.
* Replaced &package[0] by package, thanks guus.
* Added Makefile.am in include/
* Let automake handle the optimization-flags for the compiler.
* Added all-packages option.

Release notes for deborphan 0.1.3 (2000-05-13T18+0200)
* The default is to run in nice-mode. Can be disabled in config.h
* Added better error handling mechanism.
* Created wrapper for getopt/getopt_long

Release notes for deborphan 0.1.2 (2000-04-13T11+0200)
* Bug from 0.1.1 fixed. 

Release notes for deborphan 0.1.1 (2000-04-12T17+0200)
* Less allocation of memory is done, resulting in faster operation.
* Not all memory is cleared first, also for an increase in speed.
* Improved error-message when status file is not found.
* A linked list is used to store the packages. Allows for storage of 
  theoretically unlimited packages.
* xalloc.c added for error checking when allocating memory.
* config.h was added. 
* Dynamic memory allocation is done when reading the status-file.

Release notes for deborphan 0.1.0 (2000-04-11T13+0200)
* Added support for `provided' packages
* Will parse options (not long options) on getopt.h-less systems.
  The --help (-h) options is adapted accordingly.
* The new "nice-mode" should enable checking for `recommended' 
  and `suggested' packages.
* Cleaned up (or GNU-ized) the manual page. 

Release notes for deborphan 0.0.3 (2000-04-08T17+0200)
* Added --show-all option.
* Will compile on getopt.h-less systems

Release notes for deborphan 0.0.2 (2000-04-08T14+0200)
* Fixed the memory leaks.

Release notes for deborphan 0.0.1 (2000-04-07T17+0200)
* First public release.