Important BUG: opening a measurement tried to load the comment from the wrong place. Was stored as an attributed but was tried to recover as a dataset.

src/lasp/lasp_measurement.py

@@ -234,7 +234,7 @@ class Measurement:
                     self._channelNames = [f'Unnamed {i}' for i in range(self.nchannels)]
 
             # comment = read-write thing
-            if 'comment' in f.keys():
+            if 'comment' in f.attrs:
                 self._comment = f.attrs['comment']
             else:
                 self._comment = ''