Add code to control prerelease parser

If the user elects to disable the prerelease parser by means of setting
the corresponding class variable, then although the parser will run, the
reltype setting will be overwritten with reltype custom and therefore,
it will not clear the array.
Add parser test cases and fix test failures
Bumped version to v1.1.0
Merge branch 'release-1.1.0' into develop