Ensures that all files that Git considers to be text will have
normalized (LF) line endings in the repository. When core.eol is set to
native (which is the default), Git will convert the line endings of
normalized files in your working directory back to your platform's
native line ending.
See also https://git-scm.com/docs/gitattributes
This repository should only contain source code and all executables
should be build from source. Thus remove the Windows executables
that were imported from the portmidi library.