Bump to use TangerineUI v2.5.2 for Mastodon >= 4.5

Update to v.2.5.1 default tag.

Update to v2.5 + Small refactor

bump tag for v4.4.0 and above to TangerineUI v2.4.2

Update TangerineUI.user.js

Update README.md

Bump to v2.4 stable of TangerineUI

Fix custom.css detection for >= 4.4.0. Enhance version detection to d…

…etect all pattern above 4.3.X correctly

Update README.md

Bump to v2.1