BoogieBox updates

Added Linux support, so you can download a Windows or Linux installer and set it up.

I'm working to improve the BoogieMix. It's still in progress but there are some improvements: the deep analysis now deconstructs the track to identify tone, key, beats, mood etc. and create the write order of tracks based on mix settings (e.g. club, long buildup etc.). The last part, which is the trickiest one, is to create the right transition by laying the beats one over another and create the transition at the right spot. It works...sometimes, so that's my focus for now.