New Linux Release 4.0.1

I have released a new version of Docfrac. This includes Linux packages and source code. A few GUI bugs have been fixed. As soon as I have a Windows VM I will do a Windows release.

In the next minor release (4.1.x) I will try to look at creating a .NET assembly and cleaning up the code.

These releases have had minimal testing, so they should still be considered beta.