Add -select, update -filter to be alias of select
Add block type typedefs for improved API readability
Add -reject; removes matching items from the enumerable
Merge branch 'feature/select'
Add -mapDictionary; maps each object in a collection to a dictionary entry
CocoaPods 0.22.3
Add -[NSArray flatten]
Implement flattenMap:
Merge branch 'feature/flatten-map'