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
FIX: regression latest.rss was broken
FEATURE: show raw email for replies/topics created via email
only staff can view raw email
further optimize raw email feature
remove broken symlink
move user-dropdown unread PM badge to right
Remove database steps in DEVELOPER-ADVANCED.md
FEATURE: advanced search help
copy
FEATURE: added status:noreplies and status:archived to advanced search
FEATURE: in:likes and in:posted search filters
FEATURE: in:tracking and in:watching search filters
FEATURE: order:views order by views