dropping project dir from the slug
dropping useless target dirs from the slug
Update common
Update compile
Update compile
Merge PR 48 "Trim the build for Play! 2 applications" into trim-play
Clean up whitespace
Add tests for Play trimming
Cache target dir
Don't clean before compiling
Incremental compiles working with preserved timestamps
Cache resolutions
Dead code
Fixed sbt bootstrap startup
Fix tests
`clean` compiles when $SBT_CLEAN=true
Couple more `clean` assertions
Merge pull request #54 from heroku/incremental

Incremental Compilation
`bin/compile` env file support
Only use env file if it exists.