Refactor code to use URI instead of String or File #1544
Remove deprecated code
Fix dita command

The -f option was mishandled as an Ant option.
Fix dita command bug

Shell and batch scripts were using old Ant syntax for -f option.
Update documentation
Add validation for attribute generalization #1619
Clean filtering utils and improve unit tests
Refactor filtering code
Improve keydef reader

Ignore duplicate keydefs in a map. Add unit test for nested keydefs.
Refactor keydef reader to use DOM instead of SAX for parsing
Refactor integration code
Refactor integration code to use SAX pipes
Refactor Ant and message files for better plug-in modulation
Fix unit test for integration process
Remove deprecated code
Replace getMax Java extension with XPath max function #1620
Support installing plug-in from a URL #1602
Remove duplicate ID validation from anchorid
Update test suite
Clean export anchor reader