Many Fixes

Slightly improved the second maze hint.

Fixed creating an empty list not costing an operation.

Fixed renaming save file immediately after creating it.

Fixed renaming a save file that is open externally.

Fixed printing spaces with the drone.

Fixed error logs showing the wrong line sometimes.

Fixed error when returning outside a function.

Fixed assigning to a negative list index.

Fixed op count of various data structure operations.

Fixed freezes with certain large data structures.

Fixed various issues with the "in" operator.

Fixed None not working as a dictionary key.

Fixed using a tuple of lists as a dictionary key.