Moved test calling into dedicated function for external use
Added support for "in", "not in", "is", "is not" comparators
Merge pull request #25 from Markush2010/cmpop

Implemented comparison operators
Merge pull request #26 from Markush2010/master

Moved test calling into dedicated function for external use
First approach to make tag parsing work.
Fix Python 2 and PyPy compat
Add IF condition parsing
Added support for AND and OR in IF condition
Added support for IF-ELSE-ENDIF
Added support for comment tags
Added intelligent parsing for tag arguments
Added support for "for-endfor" and "for-empty-endfor"
Added some tests to verify replacement of iterator variable in for loops