Revision history for Perl extension XTM.

0.34  Sun Aug  4 21:32:45 EST 2002
	- added LTM/CParser (would not build automatically on some systems?)
	- more speed improvements in XTM::Memory (topics query)
	- fixed documentation bug for induced_topic_tree
	- added class-instance as special association type to induced_topic_tree
	- added loop support (via shared trees) in induced_topic_tree, pruning reduces runtime
	- added some PSIs to XTM::PSI
	- added method descriptions to the most important base classes

0.33  Fri Jul 26 21:35:17 EST 2002
	- fixed bug which raises exception when XTM::Path creating /topic[@id = '...']
	- changed simple search syntax in XTM::Memory 'regexp' -> 'regexps'
	- added commands 'merge', 'duplicate_suppression', 'follow_maps' to xtm.pl
	- added consistency to be passed through all sync_ins also through XTM::Virtual
	- added t/08topic.t for simple tests
	- added 'is-reified-by' clauses in AsTMa (XTM::AsTMa::Parser) for topics and associations
	- added AsTMa directive auto_complete
	- added AsTMa directive encoding to occur several times in a document
	- added first (still experimental) version of LTM parsing, see XTM::LTM
	- fixed strange 'cannot add to undefined' error in XTM::Path when using XTM::Path::create and find inside one program (workaround, not solved yet)
	- allowed several scope topics for an association (follows XTM and LTM)
	- added caching to XTM::Path, already parsed expressions are cached
	- added variable to XTM::Path (similar to SQL prepare/expecute)
	- added method add_defaults to XTM::topic to add default type/scope to topic components if missing
	- modified Memory, generic for major performance improvements when merging (still some potential to be used)
	- modified Memory: merging dies if a topic is merged with an existing but both have a
	     different addressable resource
	- fixed bug in XTM::Path not detecting correctly strings '0'

0.32  Sun Jun 30 20:36:01 EST 2002
	- added XTM::grammar, a package to hold element dependencies and nesting (internal mainly)
	- added XTM::Path, XPath-like navigation through XTM::base data structures
	- XTM::Memory::id: setting of id added
	- XTM::topic, doc corrections
	- using a precompiled version of the Parse::Recdescent (considerable AsTMa= speedup)
	- fixed potential problems in XTM::generic
	- added merging code to XTM::Memory, is controlled via a hash in XTM constructor (BACKWARD COMPATIBILITY?)
	- fixed docu/code mismatch in XTM::topic (occurrences)
	- added scope_eq to XTM::scope
	- added canonicalize to XTM::topic (removes duplicates, sorts things)
	- added more query clauses for the simple query language in XTM::Memory
	- more directives for XTM::AsTMa (naming, encoding). Use with care.

0.31  Thu May 16 16:56:40 EST 2002
	- got rid of XTM::XML::ParseError and used XML::SAX::Exception instead	

0.30  Wed May  8 17:50:02 EST 2002
	- removed dependency of File::Slurp (weird version number), reported by az
	- fixed bug in incorrectly reporting line numbers in AsTMa::Parser, reported by az
	- various documention bugs fixed (still much to do)
	- astma2xtm.pl: some minor changes in switches (see man page)
	- AsTMa parser: local comments MUST have at least one blank before the '#' (see docs, may break some maps, sorry)
	- activated tests (old XML::LibXML core dump error has disappeared)

0.29  Feb 25 07:23 EST 2002
	- Debian test version

0.28  Wed Jan 16 22:17:57 EST 2002
	- fixed empty character handling in AsTMa::Parser, added line number for better debugging
	- added more accurate dependencies
	- added some explanation to the README
	- fixed XTM::XML::MemoryBuilder to work with SAX::Expat, LibXML::SAX and PurePerl (still a problem there)
	- AsTMa parser: added directives %cancel, %log

0.27  Mon Jan 14 12:23:41 EST 2002
	- added missing XTM::AsTMA::MemoryBuilder
	- fixed test suite bugs which occur at some other Perl installations

0.26  Mon Dec 31 21:49:37 EST 2001
	- add xml output serialization for (most) classes
	- revamped XML::ATM into XML::AsTMa, XML::ATM is not distributed any more
	- added astma2xtm.pl into bin/ (converter), this obsoletes atm2xtm.pl
	- fixed some bugs in XTM::XML
	- added connected methods to topic and association to return all topic refs mentioned there
	- added test for topic IDs in XTM::topic.pm (experimental), have to be valid XML identifiers
	- started to move to Test::More for testing
	- added bin/prettifyxtm.pl
	- fixed unclean code in XTM::topic::has_instanceOf, checking for URIs now
	- moved XML parsing to XML::LibXML::SAX using the XML::SAX factory
	- moved most testing to Test::More, added numerous tests
	- added population mechanism into XTM::topic to load default values
	- added auto_complete parameter to all XTM::IO subclasses to control auto_completion, default is 1
	- updated README to reflect Perl version 5.6.1
	- added support rt.cpan.org to README 
	- added 'stats' command to xtm.pl
	- added commands 'topics' and 'assocs' to xtm.pl
	- modified URIs handling in xtm.pl: URIs without a scheme will default as file: URIs

0.25  Mon Dec 17 18:06:24 EST 2001
	- added statistics to info() in XTM
	- added clusters() in XTM

0.24  Sat Oct 20 18:46:32 EST 2001
	- fixed bug of not escaping & in XTM::ATM for occurrences
	- fixed bug of not checking for all URI schemes in XTM::ATM
	- fixed too restrictive pattern in XTM::ATM to allow valid XML ids as topic ids

0.23  Sat Oct 13 12:32:11 EST 2001
	- added XTM::ATM support, documentation in docs/astma.html
	- fixed hickup in pod in XTM::Virtual
	- silenced 'Uninitialized value....' during make test in XTM::XML and XTM::ATM
	- fixed some documentation errors, formatting
	- added more map debugging facility in XTM (see XTM::info)
	- added map meta information to XTM and xtm.pl
	- distinguished between topic and assoc searches in xtm.pl
	- straightened syntax for XTM::topics 'assocs .....' to allow no trailing characters
	- changed meaning of parameters of induced_vortex in a subtle but dangerous way

0.22  Sat Mar 17 10:22:40 EST 2001
	- fixed test maps which made 'make test' fail
	- fixed nr of subtests in 04virtual.t
	- removed debugging output from XTM::Virtual
	- fixed missing use XTM::generic in XTM::subjectIndicatorRef

0.21  Sat Mar 10 11:24:10 EST 2001
	- added XTM::Virtual
	- added virtual map support into xtm.pl
	- added commodity function (induce*) to XTM
		induced_vortex
		induced_assoc_tree
	- added XTM::base as introductory package
	- moved XTM::XML::PSI to XTM::PSI
	- removed _massage from XTM::XML::Grove2TM
	- relaxed is-a ... pattern for queryingto allow for PSIs
	- unified various redundant subroutines in XTM::Memory

0.20  Sat Feb 24 23:28:45 EST 2001
	- minor release gap because of completely reorganised package structure
	- honoring XTM-1.0 http://www.topicmaps.org/xtm/1.0/xtm1-20010223.html (modulo TNC)
	- consolidated topics and c_topics into some simple query language driven routine
	- moved all thread code into separate server distribution
	- added xtm.pl workbench

0.12  Sat Feb 17 10:15:39 EST 2001
        - fixed memory management which cause loooong hangs on the server at some requests
	- fixed small bug in xtmctrl which made it complain in interactive mode
        - optimized a bit assoc via <topic> with <topic> queries
	- optimized XTM::Virtual cache management, small reorgs there
        - introduced config management via additional switch to xtmd.pl

0.11..0.07 not documented, intermediate panic releases


0.06  Fri Feb  9 13:49:13 EST 2001
        - fixed daemonization
        - optimized XTM::Memory::_topic_tree handling a bit
	- XTM December version of the standard implemented, not fully complete

0.04  Sun Dec 31 14:18:45 2000
	- original version; created by h2xs 1.19
        - cloned from inofficial TM-0.04 version