Additions
+ Autominer now shows drill depth, which is useful to know what resources you could get.

Changes
+ Autominer now can only mine the appropriate ore types based on the current best pickaxe in its inventory.
+ Autominer now uses the best pickaxe in its inventory first.
+ Autominer in mode 1 will skip over blocks it cannot mine.

Fixes
+ Autominer now consumes its pickaxes again.