Example on using pyFAI and pixel splitting for azimuthal integration of DSSC

• Fix change in dask groupby not dropping dimension
• Adds an example notebook for azimuthal integration and pixels splitting

Close #46 (closed) #8 (closed)

doc/changelog.rst

@@ -7,7 +7,9 @@ unreleased
 - **Bug fixes**
 
     - fix :issue:`45` SLURM scripts embedded in and download link available from documentation :mr:`171`
- 
+    - fix :issue:`8` regarding azimuthal integration with pyFAI and hexagonal DSSC pixel splitting by providing an example notebook :mr:`174`
+    - fix :issue:`46` with a change in dask groupby mean behavior :mr:`174`
+
 - **Improvements**
 
     - update GATT-related mnemonics, add `transmission_col2` :mr:`172`