v0.9.12a

Release Notes:

• LCD/OLED: Long filenames scroll during navigation
• LCD/OLED: Make filename scrolling more configurable
  • FF.CFG: {nav,display}-scroll-{rate,pause}
• Direct navigation: ".." returns to subfolder position within parent
• Fix head-seek settle time emulation
• ADF: Generate longer tracks, like a real Amiga would