LED brightness in VPX

[4starpizza]

I'm getting started with MPF and using the mpf-vpcom-bridge to interface with a VPX table to do my yaml'ing before starting to build my physical machine. This has been a productive setup and I've learned a ton.

One limitation I've encountered is that the VPX platform definition in MPF (platforms/virtual_pinball) only transmits light brightness as a boolean state. This is coded in virtual_pinball.py. I've changed things locally to send a floating point brightness to VPX instead with success. I'm considering contributing this enhancement back to the repo. I could add a new method to the VirtualPinballPlatform class so that the existing method still works as-is using booleans. Any thoughts?

[borgdog]

Sounds like a nice improvement, certainly wouldn't want to break any existing stuff though.

[4starpizza]

PR submitted for this: missionpinball/mpf#1666