PS-0.15.x-v0.33.0

Breaking changes:

• Split example CI files into own files; add spago next/legacy (#616 by @JordanMartinez)

  Previously, the Continuous-Integration.md file stored
  sample CI files for GitHub Actions in a code block.

  These weren't easy to copy-and-paste, so I've moved them
  into their own files with a Readme file explaining them.

  I also distinguish between Spago Legacy (Haskell-version)
  from Spago Next (PureScript version)

• Update PureScript to v0.15.13 (#619 by @JordanMartinez)

• Update Spago to 0.21.0 (#619 by @JordanMartinez)

New features:

• Link to falsify and other property-testing-related links (#619 by @JordanMartinez)

• Link to fp-ts' migration guide from PS to TS (#619 by @JordanMartinez)

• Link to Free Boolean Cube (#619 by @JordanMartinez)

• Add link to GADTs: Defeating Return Type Polymorphism (#619 by @JordanMartinez)

• Adds a table clarifying the difference spago Haskell and PureScript codebases (#619 by @JordanMartinez)

• Add an initial explanation for Visible Type Applications (VTAs) (#619 by @JordanMartinez)

  This change affects the following folders:

  • Basic Syntax
  • Type-Level Syntax
  • Hello World/Type-Level Programming

  Reading through each is needed to get the full picture of VTAs.

• Link to 'PureScript for Elm Developers' (#618 by @laurentpayot)

Bugfixes:

• Fix erroneous Effect example (#619 by @JordanMartinez)

• Fix instantiation of StateT's MonadState example (#619 by @JordanMartinez)

• Miscellaneous tweaks to build tool history (#619 by @JordanMartinez)

• Fix Pursuit operator search (#615 by @MarkFarmiloe)

• Fix Function Monad typo (#613 by @kettron)

• Fix 'for ... break if' typo (#605 by @sorenhoyer)

Internal:

• Begin using purs-changelog to manage changelog entries. (#616 by @JordanMartinez)

  Previous changelogs were moved into the old-changelogs directory.
  The previous generated changelogs weren't as useful/readable as just
  keeping a manual log. I also think this will be easier to track what
  changed as I can add/edit an entry as I make the change itself.