Add forL and forR
Total rewrite: right-associative only
Re-implement monad transformer and benchmarks
Implement MonadIO for transformer
Positive benchmarks for LoopT'
Complete pure implementation based on monad transformer
Switch bench-pure to new pure implementation
Increase strictness of foldl'
Remove obsolete Control.Loop
Add breaking and continue
Fix strictness analysis of foldl' (requires -O2)
Fix strictness analysis of 'for'
Marginally improve performance of 'enumFromN'
Pepper code with INLINE pragmas

This is appropriate (IMHO) because these functions are literally the
inner loops of the programs that use them.
Add notice about empty-loop overhead
add numFromN, numFromTo
Change Ord constraint to Eq on enumFromTo
Remove unused extension GeneralizedNewtypeDeriving
Add foldM
Add filter, filterM