Defined and use variables for .panel-heading & .panel-footer padding
grunt dist
Use CSS Flip to generate RTL variation
update GitHub issue link in comment
add Grunt task for css-flip-ing & add RTL to Gruntfile configs
update shrinkwrap
Run grunt dist.
grunt build-customizer-html
update boto & s3_cache.py
Remove bootstrap keyword
Added the very useful .animation-fill-mode() mixin

I think that's the only animation property that was missing and it's quite useful.

https://developer.mozilla.org/en-US/docs/Web/CSS/animation-fill-mode
Merge pull request #12829 from ZDroid/no-bs-keyword

Remove bootstrap keyword from package.json
Update load-grunt-tasks.
Bump grunt-jscs-checker.
Run `grunt update-shrinkwrap`.
Add docs.css in the CSSComb task.
Run csscomb before cssmin.
Merge pull request #12861 from twbs/docs-csscomb

Add docs.css in the CSSComb task.
Fix for issue #12854 where push and pull resets

The col-*-push-0 and col-*-pull-0 classes try to reset the positioning using 0% but this prevents the opposite direction positioning to freeze and not being set correctly.
To fix that, these must set the position to auto instead of 0% with means left:auto and right:auto instead of left:0% and right:0%.
Break csslint targets.