Traffic Simulator

Notable additions/changes:
- You can now add default bulbs to traffic lights.
- Negative y-offset values are now accepted in the road builder.
- Added "automaticTransmission" property to vehicle types (currently only causing different brake light behavior when enabled).
- Added overwrite bulb reponse option to traffic light controller editor.
- Added more height steps to the road builder.
- Reworked Vehicle Free Pathing algorithm.
- Improved vehicle lane preference logic (Vehicles should change into correct lane earlier more often).
- Added "nonLightEmittingBulbs" config option to traffic lights.
- Added additional inspector info to vehicles.
- Improved vehicle yield logic.
- Added "isCover <true/false>" tag to the bulb config, which (if true) prevents the bulb from fading out.
- Inspector menu now automatically opens when clicking a block.
- Detectors can now be inspected.
- Player head now rotates with player orientation in simulation controller.
- Ports inside the program editor now light up when you hover over them with the mouse.
- Added "Allow Block Breaking" option to the traffic simulator placement tab.
- Made vehicles more likely to detect whether another vehicle has to stop at a traffic light.

Notable fixes:
- Fixed ConcurrentModificationException when player leaves server.
- Fixed traffic light texture not defaulting back when switching types.
- Fixed traffic light texture not being copied with copy tool.
- Fixed negative origin/target lane values not being accepted.
- Fixed bug where traffic light bulbs would not resize correctly after changing traffic light type.
- Fixed crash where typing invalid numbers could cause crash in certain GUIs.
- Fixed custom bulb sequences being replaced in phase editor when shift-clicking other bulb.
- Fixed crash during vehicle to vehicle communication.
- Fixed bug where vehicles wouldn't send updates to players very high above the vehicles.
- Fixed a bug that would cause vehicles to drive into each other when changing lanes.
- Fixed inspector item not working on blocks.
- Fixed traffic light states not being saved correctly to disk.
- Fixed detectors not updating their Redstone signal upon rejoining a world.
- Fixed Networking issue during Simulation Controller Data transfer that would cause the game to freeze.
- Fixed vehicles sometimes falsely assuming another vehicle still has to wait at a traffic light.
- Fixed circular bulbs rendering as white.
- Fixed bug where vehicles would ignore safety distance.
- Fixed safety distance sometimes not being calculated correctly.
- Fixed "Is Entity In Zone" program block for the detector.
- Fixed detectors not updating automatically when changing detection zones.