Release preview versions

[ann0see]

Since the build process is quite easy and we've just merged delay panning and auto adjustment for faders, I think releasing early preview versions for new features before the next release would be great. Any thoughts?

[hoffie]

Fine by me. This would be a "beta", right?
Should we settle on what the next version will be called first?
In my opinion, new features warrant a new minor release. This would that what you propose would become 3.8.0beta1.