High-Speed Rail

https://github.com/pcal43/highspeed-rail/releases/tag/0.12.0+1.21.3

This is a significant update to Highspeed Rail:

• It adds support for the new experimental minecart physics.

• The 'minecartMaxSpeed' gamerule can now effectively be set on a per-block basis.

• Arbitrary minecartMaxSpeeds can be set (higher than the vanilla maximum of 1000). Use with caution.

• Acceleration and deceleration values can also be tweaked (new physics only).

• The new physics can be force-enabled in old and non-experimental worlds via a config setting.

• The speedometer is supported (and accurate) with the new physics.

• A lot of new configuration options have been added and changed, though compatibility has been maintained with older config files. See the new default config file here: https://github.com/pcal43/highspeed-rail/blob/main/src/main/resources/net/pcal/highspeed/default-config.json5