txt2xml: parsing text to xml News

A major release featuring much simplified internals,
the introduction of a command line application, lots more
documentation, some important bug fixes, a properly working
RegexMatchProcessor and unit tests for the core.

Added a GUI config tool to interactively edit txt2xml configurations and see the effect of changes immediately. Also some bugfixes and more documentation.

txt2xml is a simple Java library for parsing arbitrarily structured text input into well-formed XML output as SAX, DOM, JDOM, or through an OutputStream. The project was inspired by "Using SAX to Read Other Formats" by Claude Duguay in "XML Magazine" March 2002.