Migrate to Spago and modernize development tooling (#26)

* Migrate package configuration to Spago

* Modernize CI and formatting tools

* Prepare major release for effectful relative

Update changelog for 5.0.1

Prepare v5.0.0 release (1st PS 0.15.0-compatible release) (#23)

* Update the bower dependencies

* Update the changelog

Prepare v4.0.0 release (#19)

* 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 #14 from purescript-node/resolve-is-impure

`resolve` is impure

Merge pull request #9 from anilanar/ps-0.11

update for purescript 0.11

Merge pull request #7 from purescript-node/update-build

Update build

Add Path.parse

Release v0.4.0

Restore tests