          pbar.pack(side=tk.LEFT, padx=2, fill=tk.X, expand=True)
          pbar.pack_forget()
          return pbar
  
      def progress_start(self, mode):
          """ Set progress bar mode and display,
  
          Parameters
          ----------
          mode: ["indeterminate", "determinate"]
 
</s> remove         self._progress_set_mode(mode)
 </s> add         self._set_mode(mode) </s> remove         self._progress_set_mode("determinate")
 </s> add         self._set_mode("determinate") </s> remove     def _progress_set_mode(self, mode):
 </s> add     def _set_mode(self, mode): </s> remove                               textvariable=self._status_message,
 </s> add                               textvariable=self._message, </s> remove     def progress_stop(self):
 </s> add     def stop(self):
    def start(self, mode):
          pbar.pack(side=tk.LEFT, padx=2, fill=tk.X, expand=True)
          pbar.pack_forget()
          return pbar
  
    def start(self, mode):
          """ Set progress bar mode and display,
  
          Parameters
          ----------
          mode: ["indeterminate", "determinate"]
keep keep keep keep replace keep keep keep keep keep
 Core updates (#982)

* plugins.extract.align
  - Expose normalization method

* lib.gui core updates
  - Minor updates to support future development. 
lib/gui/custom_widgets.py