Update release workflow to use latest Ubuntu instead of 18.04

Update to Bulma 0.9.3

Update the gh-action-pypi-publish action.

Merge pull request #74 from lemonsaurus/lint-on-push

Support more than one custom SCSS file.

Bump version to 2.3.0

Merge pull request #69 from lemonsaurus/lemon/bulma_modal

Add a bulma-modal extension to handle modal events.

Bump Bulma to v0.9.1 in README.

Bump version to 2.0.3

Bump version to 2.0.2

Bump version to 2.0.1