Calculate array capacity ahead of time and skip copying
Optimize NSNull and RACTupleNil checks
Skip unnecessary copying in +tupleWithObjectsFromArray:…
Add unit tests for RACTuple.rac_sequence
Add a custom sequence adapter for RACTuple which avoids copying
Use == instead of -isEqual: for singletons
Merge pull request #460 from ReactiveCocoa/tuple-optimization

RACTuple optimization