1. Only set max speed, acceleration handled by default mechanism
2. Fixed bugs of flashing actionbar

1. Allow the minecart to break up the default max speed
2. Only apply custom speed on activated powered rails

NOTE: Please remove config.yml & lang folder when updating

1. Added folia support (untested)
2. Fixed known bugs
3. Added more customizable features

1. Added functions for transfer
2. Added functions to set line color
3. Other custom options for display