Audio::Samples are a move-only class, they can't be copied.

Using this non-copyable class in a std::vector<std::map<..>> does not
compile in Visual Studio 2017, see e.g.:

https://stackoverflow.com/questions/58700780/vector-of-maps-of-non-copyable-objects-fails-to-compile-in-msvc

Replacing the use of vector with list, which does compile.

voronoi merger inherits mask merger, make destructor virtual

Fix GLEW

Create sponsoring button

Update build doc for Mac

Linux pkg sys

unused lambda capture

Now we can only use mac ports or homebrew

LINUX_PKG is now the only option

use a docker image for CI

we need this to make later versions of CUDA compile