Auto_Bed_Leveling: Enhanced G29 command

[AbuMaia]

I turned off safe homing because of a problem I noticed where both X and Y were being offset too much. I thought it was caused by safe homing, but later figured out it was a problem with the numbers I gave the bed leveling grid. I have safe homing on again.

As for the Z lowering before extending the probe, I have it set to raise 13mm before homing Z, so I assume that if the printer knows Z is higher than 13mm, it will lower to that point then extend the probe. I think it was doing this because the printer was left on between homing runs. If I turn the printer off and back on, and home again, it will raise then extend the probe. Likewise, if Z is below 13mm, it will raise to that point then extend the probe.