20180111

• Fix importing PS songs with 2 drums audio files (corresponding to [mix _ drums4])
• Fix incorrect .dta/.rbproj values for the New Wave genre and its subgenres
• Remove extra tempos and time signatures after [end] event to prevent Magma errors
• Prevent encoding errors from reading song.ini, and assume UTF-8
• Fix rare corruption of certain album art JPEG files
• Remove Easy/Medium basic keys force notes (for TrojanNemo's MIDI validator)
• First Mac app release; see README for requirements