v3.3.0

Merge pull request #11 from id3as/master

receive type class and show instances

v3.2.0

Remove warning and use spago (in makefile)

v3.1.0: ReceivesMessage etc (#9)

• unsafeRunProcessM
• ReceivesMessage

New typed process API

• Added ProcessM monad to give the context of actions possible in a typed spawned process, instead of providing them as a context parameter
• Added self to both typed (HasSelf) and raw APIs
• Added process exit trapping via ProcessTrapM (#6)
• Added HasProcess/HasPid type classes (#4)

These make it easy for folks to newtype over pids and processes to
create their own strongly-typed versions, whilst still being able to
create functions that work over them as if they were just plain ol' pids
and processes (Pinto uses this for GenStatem and GenServer).