update changelog

CHANGELOG.rst

 Change Log
 ==========
 
+v2020.1.0: 2020/01/23
+---------------------
+
+* Bug fix:
+
+  - Fix intensity computation issue on macOS by avoiding to save to HDF5 from multiprocessing part (MR: !120)
+  - Fix Qspace conversion with median filter issue on debian8 by disabling OpenMP (MR: !114)
+
+* Compatibility:
+
+  - Avoid `h5py` deprecation warnings (MR: !121)
+  - Improve compatibility with `PySide2` (MR: !118)
+  - Make download during tests compatible with `silx` v0.11.0 (MR: !116)
+  - Update tests after changes in dependencies (MR: !119)
+
+* Documentation:
+
+  - Update installation documentation (MR: !117)
+  - Add description of HDF5 input file format to the documentation (MR: !115)
+
+
 v2019.1: 2019/02/08
 -------------------
 
@@ -61,5 +82,6 @@ v2019.1: 2019/02/08
   - Update documentation (MR: !52, !79, !109, !113)
   - Update to newer versions of dependencies (MR: !81)
 
-  v2017.1: 2017/12/15
-  -------------------
+
+v2017.1: 2017/12/15
+-------------------