1.16.6b1

General:

• Added a pane in the dashboard to assign keyboard shortcuts.
• Implemented ability for toggle options to add temporary rules.
• Support Thunderbird-like applications without relying on Thunderbird application ID.
• Support moving tabs in tab opening function in Thunderbird-like applications - extensions' tabs now open next to the current tab like they do in supported web browsers.
• Target Borealis Navigator and Epyrus applications.
• Support specifying weeks, hours, or minutes in filter list's metadata ! Expires: directive.
• Make updating asset source registry more robust.
• Slightly bumped up system requirements to Firefox 51 level.

Filters and parsers:

• Updated filter list.
• Use own legacy filter list without some of the old gunk.
• Updated redirectable resources and defuser scriptlets to be in sync with upstream version of uBlock Origin.
• Updated other existing scriptlets to be in sync and added new ones found in upstream version of uBlock Origin.
• Replaced syntax converter with an alias system for referencing redirectable resources and scriptlets from filters.
• Use scriptlet argument parser from upstream version of uBlock Origin for reliable argument passing and support variable number of scriptlet arguments.
• Added an alias from= for network filter option domain=.
• Improved redirection engine matching logic and added new static network filter option: redirect-rule=.

Misc changes picked up from upstream version 1.16.6 of uBlock Origin:

• Added missing favicon to asset-viewer page.
• Fixed an issue where element picker could pickup body tag twice.
• Changed element picker's CSS styles to target it specifically.
• Updated translations.