Beta Hybrid Citybus 8.1.0

- Fixes for compatibility with BeamNG 0.16
- Brake lights now turn on in "L" if regeneratively braking hard enough (even with foot off brake pedal)
- Changed engine dynamics a bit (simulating an engine tuned for slightly higher RPM operation)
- New "torque demand" logic which results in much smoother transitions between EV/engine modes. Throttle pedal maps to "torque on wheels" and everything else is determined from there.
- More consistent engine startup behavior (smoother/quicker)
- Battery is used more efficiently and charges at more predictable times (e.g. foot off throttle at high speeds)
- Better torque distribution at extremely low battery levels
- Fixed overspeed behavior so that it's impossible to cause either MG1 or MG2 to go too fast (some day I'll actually implement damage so this matters...)
- Fixed several situations where rubber banding of engine RPM would occur