Add's a test for the .write with no types caching bug
Add fix
Missing newline after merge
Add comment on why in the rich pipe
Fix DailySuffixTsv for testability, remove leaked DailySuffixTsv
Merge remote-tracking branch 'origin/develop' into jco/daily_suffix_tsv
Review comments, comment on the IdentityFunction, make it an object. Few comments in the write method.
Merge pull request #919 from twitter/jco/daily_suffix_tsv

Fix DailySuffixTsv for testability, remove leaked DailySuffixTsv
Merge pull request #913 from twitter/feature/tsvCacheBug

This handles the case where scalding will save out a tsv and re-use it down stream leading to issues where the types are not strings