Merge branch 'hotfix/3.2.1' into develop

Use CSS3 transform instead of change in width for masthead menu underline effect

Update gems

Remove >>>>>> conflict text from CHANGELOG

Merge branch 'release/3.2.0' into develop

Merge branch 'release/3.2.0'

Update CHANGELOG

Merge branch 'feature/update-dependencies' into develop

Rename tag/category archive variables to avoid possible conflicts with site.tags and site.categories
- Fixes #329

Update gems

Merge branch 'release/3.1.8' into develop

Merge branch 'release/3.1.8'

Update CHANGELOG

Remove duplicate fa-twitter and fa-twitter-square classes from _utilities.scss
- Fixes #302

Make page.title conditional in <h1>
- Fix #312

Merge branch 'release/3.1.7' into develop

Merge branch 'release/3.1.7'

Update CHANGELOG

Merge branch 'feature/translate-recent-posts-title' into develop

Merge branch 'master' of https://github.com/flohw/minimal-mistakes into feature/translate-recent-posts-title