SynthFont updated to v1.540

SynthFont has been updated to version 1.540.

New features:

• Added the MIDI file extension ".MIDI" to the list of known files (as an alternative to the old ".mid" extension).
• Added a function to display which notes belong to a certain scale in Pianoroll. Fully available to registered users only.

Bug fixes:

• The Live MIDI Input Mode was broken in version 1.530.
• Fixed some issues related to the Default SoundFont Override functionality.
• Fixed some other minor bugs and irregularities.