Merge pull request #11 from id3as/master

receive type class and show instances

Remove warning and use spago (in makefile)

ReceivesMessage etc (#9)

* Added unsafeRunProcessM

* Added HasMessage type class

* Renamed HasMessage to ReceivesMessage

Co-authored-by: srstrong <steve@srstrong.com>

Trap exits (#6)

Trap exits

(And make tests real tests)

spawnLink + receiveAfter (#3)

* spawnLink + receiveAfter

* Pedantic whitespace

Pedantic whitespace

Updates for 0.12

- Removal of effect rows
- Stop attempting to use phantom types to track receive occurrances