Setting for animated circle area - RC1

• Setting for animating circle area
• Cleanup preferences

Improved vibration/visuals synchronization with sound

• Improve synchronization between sound and visual feedback and vibration
  (thanks to TBWarrington and jorfus for all the testing)
• Remove notification more reliably, when app is killed.

Test vibration improvements rc6

• Use System.nanoTime() for most of the internal timings instead of millis for more consistency.
• Synchronize only with last tap and don't use averages, since this seems to lead to a more expected behavior.
• Further changes to kill the notification, when the app is killed.

Test vibration improvements rc5

Refactored audio mixer.

Test vibration improvements rc4

Use AudioTimestamp for better audio-visuals synchronization

Test vibration improvements rc3 - disabled sync

Disable periodic synchronization of vibration and visuals with sound.

Test vibration improvements rc3

• High priority thread for note started listener
• Enable vibration delay setting

Test vibration improvements rc2

• Use dedicated job for handling note starts.
• Use extended buffer size.

Test vibration improvements

Cache vibration effects

Fix crashes after pressing play on some systems

• Fix crash after pressing play on some systems
  (thanks to jorfus for the support to find the issue)
• Fix playing first note twice after pressing play on some systems
  (thanks to jorfus for the support to find the issue)
• Modified mute icon
• Updated to latest dependencies