v0.9.0

Just add Keyboard (Simple) back, how hard can it be? Apparently very.

XInput gamepad support

• New profile: Keyboard (Simple), the game's all-keys profile, back on
  the F7 list. Every action bindable, for both players.
• Simple and the gamepad share one bind page, but each shows only its own
  inputs, and each keeps its own saved binds - switching profiles or
  restarting no longer loses either set.
• Changing device takes effect as soon as you press OK; no trip through
  the bindings page needed.
• Starting the game without a controller connected no longer resets the
  device or the binds.
• The device list is now ordered Gamepad, Twin-stick, Keyboard (Simple),
  Keyboard (Real).
• The bindings window titles both player sides correctly; the label
  inside, stuck on "1P side" since the original game, is neutral now.

Extras menu (F11)

• The dialog now pauses the game and the music while open, like the
  built-in F-key menus.