Gravity update installed

This is a small update that finishes a prototype level and adds another level, both utilizing the new feature of custom gravity

• Improvements to time splitting and player cloning to prevent unintentional desyncing between player and clone
• Two new levels (one was previously uncompleted and accessible from the dev room)
• Minor improvements to certain aspects of some levels to make moving the clone more convenient
• You can now restart the game by going to the first level through a portal in the devmap