Update to latest postgrex
Replace nil? => is_nil
Update changelog
Release v0.2.4
Bump to v0.2.5-dev
Fix encoding of interpolated `nil` values
Use elixir 1.0.0 on travis
Rollback should Start App unless specified :no_start
Fix precompiled elixir path
Rename Query.BuilderUtil => Query.Builder
Move query builder modules to their own namespace
Change timeout of migration queries to infinity

Closes #279.
Support interpolated large integers
Changed Logic from code Review feedback
Added missing switch
Fixed up Unit Tests
Support interpolating values on `Repo.update_all`
Merge pull request #280 from dokie/master

Rollback should Start App unless specified :no_start
Add uuid type
Correctly handle `nil` values inside type tag functions