2.28.0

1. RAW datagrams in SAM
2. Publishing encrypted LeaseSet2 with DH or PSH authentication
3. Ability to disable battery optimization for Android
4. Transport Network ID Check
5. Set and handle published encrypted flag for LeaseSet2
6. Fixed ReceiveID occasional change in the same stream
7. Handle "\r\n" command terminator in SAM
8. Correct handling of addressbook lines with signatures

Note: Ubuntu 18.10 (cosmic) is EOL, no packages will be provided.