Now with fewer bugs, 2016-02 edition

• Reduce the exposed type granularity down, maintains binary compat wit…: #235
• avro binary with schema: #238
• Make string Injections safer. Fix #199: #237
• Mostly maintenance commit: #234
• set the max file size to deal with #184: #232
• Getting rid of a circular dependency between bijection-macros and chill: #228
• Noticed this appearing in downstream bundles, should be for test only: #226
• Upgrade sbt launcher script (sbt-extras): #225
• En-threadsafe json injections for collections: #224