- added a method to gracefully exit from threaded tasks and implemented it for the NCC Tool and for the Paint Tool

- modified the on_about() function to reflect the reality in 2019 - FlatCAM it is an Open Source contributed software

flatcamGUI/GUIElements.py

@@ -1743,7 +1743,7 @@ class _BrowserTextEdit(QTextEdit):
 
     def clear(self):
         QTextEdit.clear(self)
-        text = "FlatCAM %s - Type help to get started\n\n" % self.version
+        text = "FlatCAM %s - Open Source Software - Type help to get started\n\n" % self.version
         text = html.escape(text)
         text = text.replace('\n', '<br/>')
         self.moveCursor(QTextCursor.End)