Rename D.Ceason to D.Csv
Get rid of map newtypes
Add more benchmarks
Rename byHeader functions to byName
Rename decodeWithHeader to decodeByHeader
Also fix some comments.
Add benchmarks for name-based type conversion
Add rewrite rule for id type conversion
Speeds up "presidents/without conversion" benchmark with 32%.
Evaluate input before running benchmark
Add rudimentary benchmark