- added support to use Multi Processing (multi core usage, not simple threading) in Rules Check Tool

- in Rules Check Tool added the functionality for the following rules: Hole Size, Trace Size, Hole to Hole Clerance

FlatCAMApp.py

@@ -2778,11 +2778,11 @@ class App(QtCore.QObject):
         # recognize therefore we must quit but take into consideration the app reboot from within, in that case
         # the args_to_process will contain the path to the FlatCAM.exe (cx_freezed executable)
 
-        for arg in args_to_process:
-            if 'FlatCAM.exe' in arg:
-                continue
-            else:
-                sys.exit(2)
+        # for arg in args_to_process:
+        #     if 'FlatCAM.exe' in arg:
+        #         continue
+        #     else:
+        #         sys.exit(2)
 
     def set_ui_title(self, name):
         """