cosmetic (ish)
basic test of simple pool (gen-proc deferred replies)
test that simple rate limiting behaviour
cosmetic
cosmetic
tidy up the cabal file
Refactor GenProcess, add support for Shutdown and 'exitHandlers'

Rename: s/dispatchers/apiHandlers/g.
Add generic handling of `Shutdown` messages.
Add `handleExit` and `exitHandlers` to the API and test.
ignote hpc artefacts
GenProcess documentation