HMRAlternate → HMROr.
HMRConcatenate → HMRAnd.
HMRReduce → HMRMap.
HMRLiteral → HMREqual.
Add a set abstraction.
HMRCharacterSet → HMRContains.
Generalize containment to arbitrary HMRSets.
Merge pull request #82 from robrix/constructor-brevity

Constructor brevity