update changelog

CHANGELOG.rst

 Change Log
 ==========
 
+0.3.2: XXX
+----------
+
+* HDF5TomoScan
+    * manage hdf5 files using the HDFFile Class in order to avoid any file corruption.
+
+0.3.1: 2020/08/19
+-----------------
+
+* TomoScanBase
+    * add field_of_view
+
+* notebooks: rework notebooks
+
 0.3.0: 2020/06/26
 -----------------
 
@@ -9,8 +23,8 @@ Change Log
 * open with swmr mode by default
 
 * utils:
-	* add get_compacted_dataslices
-	* rework HDF5 mock class
+    * add get_compacted_dataslices
+    * rework HDF5 mock class
 
 
 0.2.0: 2020/03/09