Merge branch 'master' of https://github.com/fatschi/sopremo-cleansing
Merge branch 'master' of https://github.com/fatschi/sopremo-cleansing
added MappingJoinCondition as a first step to delay the use of spicy datatypes as much as possible.
Merge branch 'master' of https://github.com/AHeise/sopremo-cleansing