Update change log for last two internal releases.

CHANGELOG.md

+# Changes in version 1.0.2 - 2017-10-04
+
+ * Minor changes
+   - Update news.json to version 147 of doc/MetricsTimeline.
+
+
+# Changes in version 1.0.1 - 2017-09-25
+
+ * Minor changes
+   - Update link to old user number estimates.
+
+
 # Changes in version 1.0.0 - 2017-09-19
 
  * Major changes
    - This is the initial release after almost eight years of
      development.
-   - Update link to old user number estimates.