Bump version to 1.2.2

Bump version to 1.2.1

Bump the version to 1.2.0 and add a Hex package definition

Tag poolboy 0.8.1p2

Merge pull request #38 from synlay/feature/behaviour_callback_refacto…

…ring

Dialyzer behaviour/callback optimizations for newer Erlang releases

Release 1.0.1

Tag poolboy 0.8.1p1

Release 1.0.0

Add EXPM package definitions

Keep the backwards API compatible start_link/1 the same as start/1 fo…

…r now