Release version 0.9.7

Author: jnidzwetzki

docs/_posts/2016-12-13-changelog.md

@@ -6,7 +6,7 @@ date: 2016-12-12 22:46:12
 order: 1
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-### Version 0.9.7 - TBA
+### Version 0.9.7 - 28.04.2020
 - New Feature: Added volume scale method in Hyperrectangle class
 - New Feature: Added service method to cancel continuous queries
 - New Feature: The queue size of unprocessed tuples for continuous queries can now be configured