Revision history for Perl extension XML::DifferenceMarkup.
0.01  Mon Sep  2 19:39:00 2002
        - original version; created by h2xs 1.21
0.02  Wed Sep  4 18:04:19 2002
        - added dependencies to Makefile.PL
0.03  Sun Sep  8 14:51:44 IST 2002
        - fixed pruning of deleted nodes
        - replaced createElement by createElementNS
        - more tests
0.04  Wed Sep 11 20:21:06 IST 2002
        - fixed pruning of deleted nodes (another case)
        - using toString for shallow comparison
        - added namespace prefix collision handling
0.06  Sun Sep 29 09:44:30 IST 2002
        - fixed merging of deleted nodes (showing up with
Algorithm::Diff 1.15)
        - using traverse_balanced instead of traverse_sequences
        - fixed merge (probably not quite)
0.07  Sun Oct 13 18:44:16 IST 2002
        - refactored
        - better handling of invalid diffs
        - more tests
0.09  Wed Jun 25 19:10:02 CEST 2003
        - fix for crash on namespaces without local name
        - more tests
0.11  Sat May 1 15:50:47 CEST 2004
        - fix for warning on reserved namespace without local name
        - test fixes (and the requirement) for LibXML 1.58
1.00  Sat Jul  1 13:49:34 2006
        - reimplemented with XS; created by h2xs 1.23 with options
                -A -v 1.00 -n XML::DifferenceMarkup
1.01  Wed Jan  2 19:38:10 2008
        - resolved name conflict between Perl and gcc headers
        (reported by Brad Guillory)
1.02  Sat Jan  5 12:10:37 2008
        - stricter checks for required libraries
1.03  Mon Dec 27 16:18:35 UTC 2010
        - ignoring more whitespace
1.04  Thu Nov 17 08:06:07 UTC 2011
        - requiring newer XML::LibXML
        - tests not loading external DTDs
1.05  Sun Jun 15 06:51:36 UTC 2014
        - upgraded LibXML adapter to files from XML-LibXML-2.0116
        (lightly edited to compile as C++)