Changelog for execline.

In 2.3.0.2
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 - Optimization release to go with skalibs-2.6.0.0
 - xpathexec_* exit codes changed.


In 2.3.0.1
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 - Bugfix release.
 - Code size optimizations via skalibs-2.5.1.0


In 2.3.0.0
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 - Added this NEWS file. :)
 - Major types overhaul to make them more POSIXly correct:
compatibility with skalibs-2.5.0.0.
 - The "import" command is now marked as obsolescent.