release 4.0 (zeta)

Hello! This may be the last major musik update for a while, so I tried to fix as many bugs as possible that were present in earlier versions, but I will still be taking feature requests and fixing bugs that come up nonetheless!

[added] settings saving
[added] option to toggle version and app name in the bottom right
[added] menu image
[added] queue mode
[added] pressing left at the top of the files list will send you up a directory
[added] option to change screen roundness
[changed] display refresh rate is now changed to 5 fps when musik is locked to save even MORE battery life!
[changed] reduced file size by changing scroll image
[changed] cleaned up a lot of the code
[fixed] shuffle will no longer play the same song twice
[fixed] loop one mode
[fixed] crash from not updating lastdirs after exiting now playing
[fixed] occasional key timer infinite loop
[fixed] song titles with an underscore or asterisk formatted the text
[fixed] song playing status now didnt update on song end
[fixed] lock screen timer wouldn't update if a certain key combo was pushed
[fixed] lock screen wouldn't refresh clock or battery percentage
[fixed] song would just straight up not load occasionally
[fixed] when leaving a directory, the list wouldn't scroll to top
[fixed] pressing left when song offset is less than 5 will send you to the next song