New features

[very experimental, do not use in production yet, saving / reloading not implemented, many crashes !] VST3 support
Gfx: when running a score with --autoplay the window will go into fullscreen automatically
WIP for video EGL support for embedded platforms
WIP for Wayland support (not finished yet)
Remote control now allows controlling intervals speed
Support for a new document template (~/Documents/ossia score library/default.score)
Allow to choose the tick duration in milliseconds for the "dummy" scheduler
Improvements to the Image process, now supports gifs, scaling...
WIP support for audioFFT input on shaders
WIP for making score work again on macOS 10.13 by popular demand.

Bugfixes

Many bugs when running the AppImage on Linux systems should be fixed
For now disable freetype on macOS as it's still crash-prone...
Support strided video formats
Lots of work for making sure that score builds without issue on a wide array of Linux distros (see the ci/ folder for all the supported distros)

Split the audio plug-ins support (Faust, LV2, VST3...) into separate score plug-ins for code clarity.
Lots of refactor and CI work, took most of the time for this cycle.