Guides: Flow diagram missing style, small icons still flash. See #150
Gist: Temporary fix for line spacing, until GitHub gets to it
Guides: Invert poll iframes, fix #150
Gist: Remove line spacing hack since GitHub fixed it on their side
Discussions: Style new PR revert buttons
Branches: Update to recent class swap by GitHub
Settings: webhook failure icon & guid block styling
Pull request: Style revert button
Fix PR revert buttons & version bump
Merge branch 'master' into gh-pages