0.4.0

• merged upstream (itdelatrisu/opsu)

+ new feature, ^ improvement, ! bugfix, - deleted feature

+ added quadratic bezier mover
+ added shrinking sliders
+ added merging sliders (#64)
+ redesigned, more user friendly settings (#18)
! fix downloading update pointing to the wrong repo (#60)
! fix too long breaks causing objects to disappear (#39)
^ improved slider rendering (thanks to @McKay42)
^ clamp msPerBeat like osu! does (#39) (thanks to @McKay42)
^ add pippi radius to storyboard options
^ added pulsing logo in song select menu
^ option to disable hit animations
^ reversearrows will now fade in
^ reversearrows will fade out after passing
^ lowered java version requirement from 1.8 to 1.7 (#87)