introduced new tests and user-friendly Parser class
[maven-release-plugin] prepare release csdltools-0.2
[maven-release-plugin] prepare for next development iteration
simplified parser helper, fixed protection error
[maven-release-plugin] prepare release csdltools-0.3
[maven-release-plugin] prepare for next development iteration
refactored regexp for ops
fixed a not vs. rule precedence issue
[maven-release-plugin] prepare release csdltools-0.4
[maven-release-plugin] prepare for next development iteration