Unstable sorting should be slightly faster than stable sorting, and if
the vector was built asynchronously then preserving the initial order
doesn't matter too much.
Continue to use stable sorting where the vector is not built
asynchronously, or if the vector is partially sorted (e.g. when new
elements are pushed to a sorted vector).
* chore: add icons and installation
* refactor: use the new battery icons
* refactor: use audio applet icons
* chore dependency cleanup
* chore: remove icons included in cosmic-icons package
* refactor: use icons for signal strength and fix handling of new connections
* fix: improve some logic for the networking applet
* chore: add cosmic-icons to Depends
* feat: use notifications icons
* chore: set bluetooth icon depending on state
* fix: set default font and text size
* feat (network): add airplane-mode message
* feat (battery): add display icons to the battery applet
* fix (battery): logic for selecting the battery icon & use new battery icons
