Update CHANGELOG.md

Prepare v6.0.0 release (1st PS 0.15.0-compatible release) (#143)

* Update the bower dependencies

* Update Node to 14 in CI

* Update the changelog

* Update List.purs

Co-authored-by: Thomas Honeyman <hello@thomashoneyman.com>

Update CHANGELOG.md

Prepare v5.0.0 release (#138)

* 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 #110 from purescript/modify_

Add modify_

Merge pull request #109 from purescript/compiler/0.12

Updates for 0.12

Merge pull request #107 from colin-passiv/master

add ComonadStore instances for EnvT and TracedT

Update .gitignore