MonadST instance for ParserT?

[jamesdbrock]

https://pursuit.purescript.org/packages/purescript-st/6.0.0/docs/Control.Monad.ST.Class#v:liftST

Then we could replace doST with liftST here

purescript-parsing/src/Parsing/String/Replace.purs

Lines 483 to 485 in c160c90

	-- Sequence ST operations in some other monad. What could possibly go wrong?
	doST :: forall b. ST Global b -> m b
	doST = pure <<< unsafePerformEffect <<< toEffect

[jamesdbrock]

Actually we should just use Array.reverse for all this instead of Array.ST.

https://discourse.purescript.org/t/what-nate-told-me-about-array-building/3191