2.2.0

• still didn't fix the string reported by pypr version
• scratchpads: fix an old regression affecting the first display of lazy scratchpads

Two new plugins:

• wallpapers
• system_notifier

Some additions, mostly for developers:

• pyprland.plugins_paths allows to add extra paths where plugins can be loaded
• single file plugins (eg: extension is "foobar.Extension") can still be loaded by adding the external: prefix to it, as in plugins = ["external:foobar"]