ANMP 8

• display a ToolTip showing time offset when hovering seek bar
• require fluidsynth >= 2.0
• render reverb of each midi channel to its respective audio channel
• various improvements to the SongInspector
• add a spectrogram visualization (#25)
• fix memory leaks when processing MIDI files
• fix a compilation error with cmake >= 3.10
• fix a few NULL dereferences
• prevent the player being stuck in an infinite nothing-to-play loop
• improve determination of playback duration for libgme
• fix resource leaks when parsing cue files
• optimize loading files asynchronously
• fix a use-after-free when changing currently played song
• fix a crash when the audio driver cannot be initialized
• avoid skipping the first audio frames when starting playback with ALSA
• improve real-time performance by avoiding on-the-fly memory allocations
• indicate how much of a song has been decoded in the seek bar
• visualize loop markers in the seek bar
• MIDI Track Loops can now be unrolled, depending on overridingGlobalLoopCount
• add support for LOOPSTART and LOOPLENGTH markers