Merge tag 'v9.5.0' into gh-pages

v9.5.0

New Features

- Migrate `bin/*.py` to Python 3

  Because Python 2 will not be supported soon
  and we are teaching Python 3 for a while.
- Add note about the version of the style

  This will help maintainers, contributors and users.
- Move boilerplate files to their own file

  This will help maintainers to copy some files.
- Add `.travis.yml`

  This will help contributors to know what is wrong.

Changes

- Fix favicon
- Fix search (powered by Google)
- Clean footer HTML
- Fix Copyright information
- Fix line wrap after dash in code block
- Fix font size of h2 in call out box
- Remove root and layout from YAML for boilerplate
- Make Jekyll ignore .Rproj

Contributors

- Andy Boughton (@abought)
- François Michonneau (@fmichonneau)
- Joseph Stachelek (@jsta)
- Katrin Leinweber (@katrinleinweber)
- Maxim Belkin (@maxim-belkin)
- Michael R. Crusoe (@mr-c)