Auto-anchor attribute regexes, document _validTags
FIX: Use lang- prefixes for HLJS; add nohighlight for ...

text; use a proper whiteListTag() call.

Old posts are not affected - no global rebake is necessary.
Clean up validateAttribute() function

Remove code duplication
FEATURE: Allow explicit rel="nofollow" on links
Fix JSHint
Fix data-* behavior (failure to understand own docs)
Update Markdown tests
Add emoji pl_PL localization
Remove href attribute from tab link to prevent duplicate event on enter.

Because Discourse doesn't preventDefault on links with an href of "#"
this tab-able link was firing a click event when enter was pressed. This
had the unfortunate side effect of breaking the history, making routing
and navigation unreliable.
css tweak - expanding some room for zh_CN
Update translations
Version bump to v1.2.0.beta1
FIX: Don't include reverts in release notes
FIX: Include security in release notes
FIX: Strip the word "SECURITY" from the output too
minor style tweaks to file upload modal
some possible improvements to build times

- use our new infrastructure based on LXC and EC2
- enable caching for bundler
- use schema:load (best practice)
- use --deployment (best practice when a Gemfile.lock is around)
make the env vars global
looks like db:migrate is required
Merge pull request #2951 from joshk/patch-1

some possible improvements to build times