Up min Chrome version.
Remove Notification.permission and page visibility polyfills.
Update archives with data from MayhemYDG fork
use rbt.asia URL
Release 4chan X v1.4.6.
use gh-pages for updates
fix updates.xml
Release 4chan X v1.4.7.
add video expansion
Release 4chan X v1.5.0.
Update deps.
video hover
add WebM to supported posting types, bypass width/height check for now
.webm #1533
global sound option
Release 4chan X v3.20.0.
Merge branch 'ccd0' into v3

Conflicts:
	CHANGELOG.md
	builds/4chan-X.user.js
	builds/crx/manifest.json
	builds/crx/script.js
	src/Archive/Redirect.coffee
	src/Images/ImageExpand.coffee
Release 4chan X v1.5.1.
Fix webm PDF bug
Changelog