Added config/pin-defs.h (a machine-generated file) to .gitignore.
Now "make clean" removes config/pin-defs.h.
Added config function def_timer().
Redefined timer pin mappings once again. (-:
More tasks...
Changed pins for E-Stop and Lid Switch to PCINTn pins.
Redesigned queues.  Implemented synchronous start.
Defined PSL macro: Program space String Literal.
Now uses PSL and printf_P to save a few bytes of SRAM.
Cleaned up dead code, added Z motor.
Added atoms for laser control.
Changed all printf to printf_P + PSL to reduce SRAM use.
Implemented actions for enable/disable Z motor, wait, and stop.
Removed specificode.txt.  It was all obsolete.
Started on scheduler.  Defined some laser operations.