Revision history for MARC::Charset

0.99 Sun May 25 08:08:05 EDT 2008
     - Addition of characters used by III ILSs which are not covered
       by the official LoC codetables. Thanks go to Galen Charlton.
     - Removed PREREQ_FATAL from Makefile.PL to make CPAN testers happy

0.98 Tue Aug  7 08:28:24 EDT 2007
     - addition of two code elements to etc/codetables.xml that enable 
       the conversion of some Arabic records that contain 0x8D and 0x8E
       which ought to map to 0x200D and 0x200C in Unicode. These mappings
       are present for Basic and Extended Latin, but are not present
       in Arabic codetables. There are actually some records that seem
       to prove the need for these rules (LCCN 2006552991). Thanks to 
       François Charette <fcharette@ankabut.net> for finding and proposing
       the fix. Rules were forwarded on to LC for inclusion in canonical 
       character set mapping.
     - added t/farsi.t and t/farsi.marc to enable testing of new 
       code rules. Hopefully this will fail if the codetables.xml is 
       inadvertently removed without LC having added the new rules.

0.97 Sun May 20 13:48:31 EDT 2007
     - added t/null.t
     - fixed Charset::Compiler to use the <alt> element when <ucs> is not 
       defined. Previous versions of MARC::Charset would convert valid MARC8
       to null when it encountered a mapping that lacked a UCS value 
       many thanks to Michael O'Connor.
     - allow carriage return and line feeds to pass unmolesteed, much the
       same as spaces today.  Apparently, UNIMARC records embed these
       formatting characters on a regular basis.

0.96 Wed Mar 14 01:24:48 EDT 2007
     - added ignore_errors() to skip MARC8 -> UTF8 snafus
     - added assume_encoding() to treat transcoding failures as if they
       are from a known, specific encoding.  Useful if you have a set of
       records that, for instance, report being MARC8 but are actually
       encoded in Latin1 (which, btw, is completely invalid and also very
       common).  Only in effect when ignore_errors() is true.
     - added assume_unicode() to treat invalid MARC8 as UTF8.  This is a
       convenience function based on assume_encoding().

0.92 Sat Feb  4 19:34:19 CST 2006
     - marc8_to_utf8 and utf8_to_marc8 needed to pass along spaces 
       without translation
     - added tests to t/escape2.t and t/utf8.t to test space behavior

0.91 Fri Feb  3 23:10:59 EST 2006
     - fix in marc8_to_utf8 for error reporting when no mapping is found

0.9 Fri Feb  3 22:25:39 EST 2006
    - the utf8->marc8 will prefer the first mapping it runs across in the
      LoC XML mapping table. v0.8 preferred the last mapping found which
      meant that utf8_to_marc8 would escape to non-ascii character sets
      for some punctuation. Thanks Mike Rylander for helping isolate
      this problem.
    - added a test that makes sure punctuation is working properly
      to no_escape.t
    - modified test of multiple combining characters in utf8.t to 
      actually test for correct result

0.8 Tue Dec  6 07:10:19 CST 2005
    - complete overhaul to make MARC::Charset use LoC XML mapping table.

0.7  Wed Sep  7 21:34:18 2005
    - pod fixes

0.6  Thu Feb 26 10:26:22 2004
    - fixed MARC::Charset::EastAsian to not hexify results of character lookup
      since we are now storing hex values in the BerkeleyDB.
    - also fixed the method for looking up the location of the BerkeleyDB
      so that the testing version takes precedence over one that is 
      installed. This is why the above error was not detected during 
      testing.

0.5  Fri Apr 11 06:47:00 2003
    - all Charset classes inherit from MARC::Charset::Generic
    - added MARC::Charset::UTF8
    - added MARC::Charset::to_marc8() for conversion of UTF8 back to MARC8
    - t/115.utf8.t basic tests of to_marc8()
    - modified Makefile.PL to create a reverse mapping database for mapping
      UTF8 characters back to their MARC8 equivalent.

0.3  Tue Dec  3 17:09:23 2002
    - revamped to_utf8() to handle multibyte character sets. It is no longer
      recursive, and didn't really need to be in the first place.
    - created MARC::Charset::EastAsian!

0.2  Sat Oct 19 03:24:22 2002
    - Added the 'Final character' to identify Extended Latin.

0.1  Fri Jul 26 09:10:36 2002
    - Original version
