psc 0.10 support and IOSync

[no-longer-on-githu-b]

Other changes:

• Make IO a a newtype for Aff (infinity :: INFINITY) a, instead of a foreign import with unsafeCoerce.
• Use newtype deriving where possible.
• Add runIO' which returns an action with an open effect row.
• No Parallel instance, not sure how to deal with ParAff.
• Add launchIO.
• Fixes IO should not be instance of MonadPlus #3.

[CLAassistant]

All committers have signed the CLA.

[jdegoes]

@rightfold How's this coming along?

[no-longer-on-githu-b]

@jdegoes Apart from Parallel I think it's OK

[jdegoes]

@rightfold Thanks! 🙏