Merge pull request purescript#20 from purescript/ps-0.11

Update for PureScript 0.11

Merge pull request purescript#17 from purescript/remove-generics

Remove generics dependency

Merge pull request purescript#16 from purescript/bump

Prepare for 2.0 release

Merge pull request purescript#10 from purescript-contrib/generic

Add generic instance

Updates for 1.0

Merge pull request purescript#7 from sharkdp/updates

Right-associative :|, proper tests and PureScript 0.8 updates

Merge pull request purescript#5 from sharkdp/add-head-tail

Add head, tail

Merge pull request purescript#4 from jonsterling/fix-warning

Remove unused type variable from foldl1

Merge pull request purescript#3 from garyb/singleton

Add `singleton`