Refactor @memoize_outfile to not also transform the filename.
Changed decorator signatures to more closely match the originals.
Memoize returns the output from the function it decorates if the function runs.
Added unit tests for the updated decorators.
Refactor of memoize output to take either ext or stem as an argument and do the right thing.
Added a fastq groomer to play with the updated memoization.
Updated to use the new memoization.
Merge pull request #66 from roryk/memoize_refactor

Memoize refactor