Prepare v6.0.0 release (1st PS 0.15.0-compatible release) (purescript#52

)

* Update the bower dependencies

* Update Node to 14 in CI

* Update the changelog

Prepare v5.0.0 release (purescript#49)

* Update CI to build with the latest version of the compiler

* Update the bower repository URL to match the URL in the registry

* Upgrade bower dependencies

* Update the changelog

Merge pull request purescript#36 from purescript/compiler/0.12

Updates for 0.12

Merge pull request purescript#31 from safareli/upFromIncluding

define upFromIncluding

Add `genBoundedEnum` (purescript#29)

* Add `genBoundedEnum`

* Use `enumFromTo` for `genBoundedEnum`

* Un-bias the enum generator

Merge pull request purescript#26 from purescript/ps-0.11

Update for PureScript 0.11

Merge pull request purescript#21 from LiamGoodacre/fix/simplify-bound…

…ed-either

Simplify toEnum for Either instance.