Add issue templates

v0.2.2

v0.2.2 release branch

page layout also used out of the box by Jekyll

Improve search data generation

Because `page.title` (and `page.url`) is already escaped and page titles served by lunrjs do not need escaping, ampersands need to be unescaped to display properly in search results.

and mention `search_exclude`

Suggesting page, since `about.md` uses it for new Jekyll installs as well.

Documentation cleanup

For pages in utilities/, reorder `nav_order` to follow `parent`.

Update bundler requirement from ~> 1.17.1 to ~> 2.0.1

Bump stylelint-config-primer from 3.0.0 to 3.0.1

Updates the requirements on [bundler](https://github.com/bundler/bundler) to permit the latest version.
- [Release notes](https://github.com/bundler/bundler/releases)
- [Changelog](https://github.com/bundler/bundler/blob/v2.0.1/CHANGELOG.md)
- [Commits](https://github.com/bundler/bundler/commits/v2.0.1

)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Fix charset for list item content in scss