  
          return [column[0] for column in columns]
  
      def tree_insert_data(self, sessions_summary):
          """ Insert the data into the totals treeview """
          logger.debug("Inserting treeview data")
          self.tree.configure(height=len(sessions_summary))
  
          for item in sessions_summary:
              values = [item[column] for column in self.columns]
 
</s> remove         """ Set a subrame for each possible column """
 </s> add         """ Set a sub-frame for each possible column """ </s> remove         """ Add the columns to the totals treeview """
 </s> add         """ Add the columns to the totals tree-view """ </s> remove         for item in os.listdir(self.pathpreview):
 </s> add         for item in os.listdir(self._pathpreview): </s> remove         """ Summarise data in a LongRunningThread as it can take a while """
 </s> add         """ Summarize data in a LongRunningThread as it can take a while """ </s> remove         """ Build a treeview widget to hold the sessions stats """
 </s> add         """ Build a tree-view widget to hold the sessions stats """
        """ Insert the data into the totals tree-view """
  
          return [column[0] for column in columns]
  
      def tree_insert_data(self, sessions_summary):
        """ Insert the data into the totals tree-view """
          logger.debug("Inserting treeview data")
          self.tree.configure(height=len(sessions_summary))
  
          for item in sessions_summary:
              values = [item[column] for column in self.columns]
keep keep keep keep replace keep keep keep keep keep
 GUI Updates (#940)

* lib.gui: Update icons
* tools.cli: Add video filetype flag to mask input
* lib.gui.popup_configure: Refresh GUI on config save
* lib.gui._config: Add Icon size and load last session options
* lib.gui.control_helper - Add control modification tracking
* lib.gui - Add Projects and Last Session
- Main root title handled by projects
- Add Hotkeys
- Create projects module
- split fsw and fst filetypes
- Add last_session saving

* lib.project
- Documentation
- Ask confirm on closing unsaved project
-Fixups

* Track model folder changes
- Shuffle some globals
- Activate System Verbosity for GUI

* lib.gui.utils - Documentation and clean up
- lib.gui.custom_widgets - Create and document

* Add GUI config option to disable auto loading model stats 
lib/gui/display_analysis.py