v2.3.22

If you updated from 2.3.17 or 2.3.19 (an alias for 2.3.17 in AMO), please see the 2.3.18 release notes as there are many changes.

Known bugs that are fixed in the nightly builds:

• Publish style button in the editor doesn't work since 2.3.18

Notable changes since v2.3.21:

• fix import (broken in 2.3.21)
• UserCSS config dialog: show (i) icon with a tooltip for @var with a line break in its label like "Text for label \n text for tooltip"

Full Changelog: v2.3.21...v2.3.22

P.S. AMO review is very slow, v2.3.21 is still pending...