add support for ignore command

inx/inkstitch_commands.inx

@@ -8,6 +8,7 @@
     <param name="fill_end" type="boolean" _gui-text="Fill ending position">false</param>
     <param name="stop" type="boolean" _gui-text="Stop after sewing this object">false</param>
     <param name="trim" type="boolean" _gui-text="Trim thread after sewing this object">false</param>
+    <param name="ignore" type="boolean" _gui-text="Ignore this object (do not stitch)">false</param>
     <param name="extension" type="string" gui-hidden="true">commands</param>
     <effect>
         <object-type>all</object-type>

lib/extensions/base.py

@@ -114,6 +114,9 @@ class InkstitchExtension(inkex.Effect):
         nodes = []
         element = EmbroideryElement(node)
 
+        if element.has_command('ignore'):
+            return []
+
         if element.has_style('display') and element.get_style('display') is None:
             return []
 

lib/extensions/commands.py

@@ -16,7 +16,7 @@ from ..svg import get_node_transform
 
 
 class Commands(InkstitchExtension):
-    COMMANDS = ["fill_start", "fill_end", "stop", "trim"]
+    COMMANDS = ["fill_start", "fill_end", "stop", "trim", "ignore"]
 
     def __init__(self, *args, **kwargs):
         InkstitchExtension.__init__(self, *args, **kwargs)