Flying Haggis - Guitar Amp update

Flying Haggis - Guitar Amp added a 'Flying Haggis' preferences panel to the iOS Settings app, with the following features:

• Background audio (On/Off)
• Enable MIDI control (On/Off)
• Primary MIDI Channel Number (1-16)
• MIDI Bank/Preset Control (On/Off)

Fixed bug in Audiobus implementation (did not work reliably when loaded into the effects slot).

Improved sound quality when using a guitar interface which plugs into the 3.5mm headset socket.

Display a warning message if Flying Haggis does not have permission to listen to the mic input on iOS7 (along with instructions on how to fix this in the Settings app)