Merge branch 'migrate-jtd' into 'master'

.github/ISSUE_TEMPLATE/bug_report.md

.github/ISSUE_TEMPLATE/config.yml

.github/ISSUE_TEMPLATE/feature_request.md

.github/dependabot.yml

.github/release-drafter.yml

.github/workflows/ci.yml

.github/workflows/deploy.yml

.github/workflows/publish-gem.yml

.github/workflows/update_jekyll-anchor-heading.yml

.gitignore

.gitlab-ci.yml

404.html

CODE_OF_CONDUCT.md

Gemfile

Gemfile.lock

Rakefile

_config.yml

_includes/components/aux_nav.html

_includes/components/breadcrumbs.html

_includes/components/children_nav.html