FIX: Supervisor leaks memory by not unregistering Fibers in COMPLETE (p…

…urescript-contrib#179)

state.

Fix interrupt bugs wrt bracket masking (purescript-contrib#171)

Currently when we check interrupt status, we are not considering the
bracket masking status. When we enter a masked state (`bracketCount > 0`),
it should be impossible for an interrupt to terminate evaluation, but
without the bracket check in CATCH, RESUME, and RELEASE, this is
violated.

*   In a nested async generalBracket, the wrong handler is enqueued.
Since we are in a masked state, it should be impossible for the `killed`
branch to be invoked. However, if an interrupt occurs it is currently
_always_ invoking `killed` when the branch is actually `completed`.
*   In a nested bracket, an interrupt will terminate evaluation of the
inner bracket even though we are in a masked state. This can also happen
with an inner `catch` in a masked state.

We need to always consider the masked state (`bracketCount > 0`) when we
discriminate the interrupt state.

Fixes purescript-contrib#170

add fiberCanceler (purescript-contrib#165)

Don't resume from an enqueued task if interrupted (purescript-contrib…

…#162)

Fix ParAff apply cancellation (purescript-contrib#155)

Merge pull request purescript-contrib#151 from slamdata/compiler/0.12

Updates for PureScript 0.12

Fix 'bhead is not a function' for forks (purescript-contrib#145)

add Lazy instance for Aff (purescript-contrib#142)

* add Lazy instance for Aff

* change Lazy tests so result is returned from fix

* move test_lazy after kill and avar tests

ParAff applicative should abort on uncaught exception (purescript-con…

…trib#135)

* ParAff applicative should abort on uncaught exception

* Test parallel/throw with never

Fix ParAff cancellation (purescript-contrib#131)

Fixes purescript-contrib#130