Changes to prevent problems with machine tracking when a manufacturing plant set to automate this machine creates it at 0,0,0 to spawn the visuals.

Fix exception on dedicated server attempting to store last used states.

- Fix issue where digging will not occur if the next target angle where digging occurs falls between 355 and 360 degrees.
- Fix issue where digging of cubes on segment edges while the player is not in range of the machine can result in transparent cube faces.

Fix blocking of digging by grass segment entities.

- Fix incorrect time interval use of key press debounce time which could cause unexpected behavior of repeating keys being too slow or too fast.
- Fix holding down of range and height change keys not repeating correctly.

Fix for case where terrain surface grass blocks excavation.

Added TNT cube to be recognized as terrain.

Fix to treat torches as machines not terrain.

Remove scaled dig power cost. Per cube costs now follow vanilla cost of 2, 8, and 16 for Mk1, 2, and 3 respectively.

Add initialization error catch.