Rework sumByKey, make scalding only use 1 MR pass
Fix storm compile bugs
Code cleanups suggested by Joe
Add .fork for safety
Use Intervals for safety and clarity
Merge pull request #303 from twitter/scalding-merge-update

Rework sumByKey, make scalding only use 1 MR pass
Add a bunch of sugar to the API
Adds a test
cleanup tests
Merge pull request #307 from twitter/sugar

Add a bunch of sugar to the API
Bump to 0.2.3
Merge branch 'release/0.2.3' into develop
Add the online project to the all set
change example to use kafkaspout instead twitterspout and mysql instead memcache for store