Rebase on upstream 1.7.3.
Migrated to SPDX license.
Disconnect the session after SSL handshake issue.
Replace secret data with asterisks in debug logs.
Bump fasterxml jackson to avoid CVEs.

Fix expired SSL certificates validation on connect
Fix bogus date in changelog
Drop slf4j depedency

Jackson upgrade to 2.12.1

Batch calls support removed
Migrated to GitHub and GitHub Actions
Apache commons lang bumped to lang3
Log4j12 depedency droped
Logging improved

Replace org.reactivestreams with standard Java implementation

Fix for negative subscription count, correct bug-url

Fix for negative subscription count

Automation: drop fc30 support
Jackson upgrade to 2.10.3
ReactorClient: half flag made atomic
More verbose logging in ReactorListener
Unit tests enabled for CI
Unit tests hardening & refactoring

No more plain java build for release process
fix for incorrect dependencies generation by xmvn
oss parent removed from maven pom

STDCI V2 configuration
Centos 7 CI build configuration removed

Fix for rpm datadir location
Use always maven to build project
Use tabs character in spec file consistently

downstream build fix

migration to java 11

heartbeat: improve how we process

Provide default timeout to purge events

Purge old events and EventPublisher should handle exceptions