[Start heating bed and extruder and level bed at the same time]

As I found a bug in this code.

 

Problem : If bed temp reached target before nozzle, it will start printing right away.

Solution : Double check by add code;

 

M104 S{material_print_temperature} ; start heating nozzle but don't wait

M190 S{material_bed_temperature} ; start heating the bed to target temp and wait

M109 S{material_print_temperature} ; heating nozzle and wait until target temp then start printing