[maven-release-plugin] prepare for next development iteration
Move character stuff into own package.
Move token stuff into own package.
Implement boolean and floating point number token types.
Add test for getting token type and value.
Rename number token type to integer.
Fix token test.
Update change log.
Implement method for recognizing operator characters.
Update JUnit.
Switch back JUnit version top use same hamcrest version as in mockito.
Introduce null object.
Remove obsolete javadoc.
Invert if for better readability
Introduce EOF token.
Reorganize imports.
Add comment token type.
Implement lookahead in character stream.
Implement comment token.
Introduce operator token.