Reverted filter.
Fixed a case where continuation counting was different from master.
Small bug with PatternType#fromString.
Renamed PatternType to PatternElem.
Merge branch 'feature/extractingBeforeCounting' into develop. Result is
that extract is still happening after counting, but new pattern
abstraction is added.
added a few very basic tests
Merge branch 'feature/extractingBeforeCounting' of https://github.com/renepickhardt/typology into feature/extractingBeforeCounting