Merge pull request purescript#93 from purescript/compiler/0.12

Updates for 0.12

Merge pull request purescript#89 from purescript/forall

Add `quickCheckGen` and variants

Merge pull request purescript#88 from matthewleon/resize-state

ensure Gen seed is modified after resize

Merge pull request purescript#85 from safareli/resize

Fix resize

Merge pull request purescript#82 from sharkdp/arbitrary-records

Add 'Arbitrary' instance for records

Merge pull request purescript#81 from Risto-Stevcev/master

Added some more helper comparison operations

Merge pull request purescript#80 from purescript/lazy

Add `Lazy` instance for `Gen`

Merge pull request purescript#63 from LiamGoodacre/feature/generic-gen

Add genericArbitrary and genericCoarbitrary

Merge pull request purescript#69 from matthewleon/shuffle

add shuffle generator