1.6.9 Light Released

1.6.9 (2019-09-13)

Merged pull requests:

• fixed #609 #610 (chenyan71)

Upgrade Guidelines:

This is a release with some defect fixes and enhancements. It is backward compatible with 1.6.8 release for Java 8.

For all the changes for the entire platform, please refer to https://trello.com/b/189msq9S/release-schedule