Migrate partial from Bower to Spago (#27)

* Migrate repository tooling and CI to Spago

* Format repository files with Oxfmt

* Place package dependencies before test configuration

* Configure registry publication metadata

* Credit migration pull request in changelog

* Prepare versioned changelog for release

* Restore Unreleased changelog template and date proposed release

* Complete release changelog links and README correction

Prepare v4.0.0 release (1st PS 0.15.0-compatible release) (#25)

* Update Node to 14 in CI

* Update the changelog

Prepare v3.0.0 release (#20)

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

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

* Update the changelog

Merge pull request #10 from purescript/compiler/0.12

Update for PureScript 0.12

Merge pull request #4 from purescript/explicit-import

Import from Partial explicitly

Merge pull request #2 from purescript/crash

Add crash and crashWith