Better, simpler visibility API.
No need to polyfill for Gecko anymore.
Fix #1129.
hasInline
Merge branch 'v3' of https://github.com/zixaphir/appchan-x
Merge Mayhem X
Release 4chan X v1.2.12.
Merge branch 'v3'

Conflicts:
	CHANGELOG.md
	LICENSE
	builds/4chan-X.js
	builds/4chan-X.meta.js
	builds/appchan-x.user.js
	builds/crx/manifest.json
	builds/crx/script.js
	latest.js
	package.json