G-code placeholder parser - new values: print_bed_min, print_bed_max, print_bed_size calculated from a bounding box of bed_shape vector of points.
G-code placeholder parser - new values:
print_bed_min, print_bed_max, print_bed_size
calculated from a bounding box of bed_shape vector of points.

Also added first_layer_print_size as a size of a first layer print
bounding box.

prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r