New --retract-lift option to lift Z while doing travel moves. #25

lib/Slic3r.pm

@@ -75,6 +75,7 @@ our $retract_length         = 1;    # mm
 our $retract_restart_extra  = 0;    # mm
 our $retract_speed          = 40;   # mm/sec
 our $retract_before_travel  = 2;    # mm
+our $retract_lift           = 0;    # mm
 
 # skirt options
 our $skirts             = 1;