Merge branch 'i244_fix_detecting_multiplex' into 'master'

fix bug in checking a data file is multiplexed

Closes #224 and #223

See merge request !253

sohstationviewer/controller/processing.py

@@ -291,7 +291,7 @@ def get_data_type_from_file(
                 return 'RT130', False
             return None
 
-        if is_multiplex is None:
+        if is_multiplex in [None, False]:
             chans_in_stream.add(chan)
             if len(chans_in_stream) > 1:
                 is_multiplex = True