Release v1.2

• Update to compile with Fable 3
• Allow specialized builders for generic CEs
• Add new types: NonEmptySeq, NonEmptySet, NonEmptyMap and MultiMap
• Integrate Task in strict CEs
• Add Mapi Support in NonEmpty List
• Add Cont.eval / ContT.eval
• Builder for NonEmptySeq
• Add choose function to Map and Dictionaries modules (in Extensions)
• Add choosei to several modules
• Add zipShortest function and use that to make generic Zip safe for collections
• Add map2Shortest, a safe map2 variant to several modules
• Add missing map3/lift3 extensions
• Add TryLast to Foldable and introduce operator tryLast
• Add tryHead and tryLast to String module (in the Extensions namespace)
• Add yield! to monad.plus
• Add SequenceBiApply and partition to Validation
• Add indexer optic for List and Array
• Rename Parse active pattern to Parsed
• Include internal error in Result.get
• Add support for %o %x %X and %B to scan functions
• Bugfix: Evaluate traverse left to right
• Use list instead of array for the generic implementation of sequence
• Better hiding of internals in parsing