Update CHANGELOG.

static/plugin_event/CHANGELOG

 --------------------------------- CHANGELOG ----------------------------------
 
 HEAD
+  - Major release with is non backward compatible.
+    It introduces new mechanisms for the reporting based on pandas.DataFrame.
+  - Required plugin_dbui 0.9.8 or higher.
+  - Add two tables Lists2 and Metrics2D2.  Keep tables Graphs, Lists,
+    Metrics1D, Metrics2D to ease the migration toward the new paradign,
+    but they are obsolete and should be removed in the next version.
+  - Remove the modules selector and report_objects.
+  - Add the modules dataframes, and report_tools.
+  - Improve the UI for the filtering of the history table, as well as
+    for the selector used by reports.
+  - Introduce the JavaScript widgets Summary and Graph.
+  - Add the scripts migrate-list-070.py and migrate-metric2d-070.py to ease
+    the migration for existing reports.
+  - Update the documentation.
 
 0.6.4 (Jan 2017)
   - Redesing the class BaseReport and EvtSelector as well as the inherited