Do handle ngspice notes

I saw this issue but I didn't thought it would affect me... well IT DID!
See PySpice-org#313
or PySpice-org#328

truly a problem

Author: Kreijstal

PySpice/Spice/NgSpice/Shared.py

@@ -637,6 +637,12 @@ def _send_char(message_c, ngspice_id, user_data):
                 func = self._logger.debug
             elif content.startswith('run simulation interrupted'): 
                 func = self._logger.debug
+            elif content.startswith('Note:'):
+                func = self._logger.info
+            elif content.startswith('Trying'):
+                func = self._logger.info
+            elif content.startswith('Supplies reduced'):
+                func = self._logger.info                
             else:
                 self._error_in_stderr = True
                 func = self._logger.error