Migrate to GitHub Actions

What's Changed

• build: migrate to GitHub Actions by @Agrendalath in #8

Full Changelog: v1.2.1...v1.2.2

v1.2.1

What's Changed

• fix: remove redundant dependencies [BB-6151] by @Agrendalath in #7

Full Changelog: v1.2.0...v1.2.1

v1.2.0

chore: bump `html-xblock` version

[BB-4011] Koa upgrade: bump Python version for CI (#5)

The Koa release uses Python 3.8, so we should be using this Python version for the CI from now on.

[BB-2659] juniper update

BB-2659 juniper xblock html and xblock completable (#4)

* Update requirements

* Fix some pydocstyle errors

* Comment on the requirement for Python 3.5

* Update the CircleCI configuration to use Python 3.5

* Install requirements in correct order

* Update versions

[BB-2120] Unpin `xblock-html` PATCH version (#3)

v0.1.2

[BB-2120] Unpin `xblock-html` PATCH version (#3)

Initial release

v0.1.1

[BB-1780] Bump `html-xblock` version (#2)