Uncomment the Syntactic instance.
Generalize the type of Enum from Data Index to Integral a => Data a.
Add Opt.scan.
Add errors for missing patterns.
Add function permute to Vector/MultiDim
Merge pull request #51 from pjonsson/vector-compat

Add TODOs, scan, enumFromTo and a Syntactic instance
Merge branch 'arrays' of https://github.com/Feldspar/feldspar-language into arrays
Give implementations for Arr and Enum in Feldspar.Vector.Opt.map