Merge RuneAudioLCDMod (Python3, parallel displays, new buttons) + Fixes

[larchuto]

No description provided.

[RandyCupic]

Hi,

Thank you for your modifications. Due to a lot changes you introduced to code, I have to review all these commits and I probably won't be able to merge everything. But you willl be notified if I use something from your code and there will be credits of course.

Most of these things I was planning to do on my own as well but I never found time. I didn't know that this repo has actually been used by someone. First, I have to simplify installation so I'm planning to transform it into a PyPi package or at least provide some automatic installation. I have to test it with parallel and I2C displays and on all Raspberry Pi versions.

The last idea is to make it RuneAudio independent so it can be used with MPD in general. And also, I was planning to add some kind of interface for extensions showable on the screen. For example, I'm using Deluge torrent client on the same RaspberryPi where my RuneAudio is so it would be nice to see some statistics on the LCD screen and use the remote to controll Deluge.

Best regards,
Randy

[larchuto]

Hi,
I'm not the author of the majority of the changements made. My modest contribution here is mostly a merge between your code base and the work done by lukazgur here. There is no need for credits.

Just for the record, your code is also working great on a Raspberry Pi Zero running Volumio instead of RuneAudio.