Fully materialised settings! (For Android 4.2 and greater only - stuff gets prettier as version number increases! Older versions (4.1 and below) still use the old version of the settings.)

Bug fix: trace lines now works properly when ‘Show centre of mass’ is enabled.

Better (I think?) colour morphing for collisions and notifications.

I think everything has been tested but this was a big rewrite so please let me know if I broke something!