add has_command()

lib/elements/element.py

@@ -214,6 +214,10 @@ class EmbroideryElement(object):
     def get_commands(self, command):
         return [c for c in self.commands if c.command == command]
 
+    @cache
+    def has_command(self, command):
+        return len(self.get_commands(command)) > 0
+
     @cache
     def get_command(self, command):
         commands = self.get_commands(command)