Look into integrating reanimate

The reanimate library is pretty exciting, and I'd love to provide an easier environment to experiment with it. Currently, it must be run as a binary, which either renders to a gif or similar format, or serves an interpreted file via HTTP. I want to look into whether it's easy to run reanimate via GHCJS and render into the local document, instead. If that were possible, I would add reanimate to the list of pre-installed dependencies for CodeWorld's native Haskell mode, so it could be used without locally installed tooling.

https://reanimate.github.io/

reanimateのドキュメントとCodeWorldのネイティブHaskellモードから始めます。このissueではソースファイルやテストは指定されていません。GHCJSがreanimateの出力をローカルドキュメントにレンダリングできるかを確認し、可能性と、実現可能であれば必要な依存関係および統合の変更を記録します。

索引モデルが issue の本文から書いたものです。