Beta testing 2.4.0

[afterxleep]

Hey all!..

We've got a new version coming up with a nice set of new features, including:

• Allow lists: You can now create 'Safe' rules, and matching messages will not be filtered
• Search: Quick and easy way to search for your rules. Especially good for people like me, with a couple thousand of them
• Rule Categories Selection: The filter ruleset is now split between "Safe Rules", "Junk Rules" and "Other", so it's easier to navigate
• Beautiful colors: Nicer color pallete for your categories!

Version 2.4.0 is available in Testflight. Make sure to grab a spot in the testing group here: https://testflight.apple.com/join/Lls6XUfx

Attention translators:
This version brings several copy changes. Grab the latest localization files from the 'beta' branch and open a PR with your updates.

Some screenshots: