* Remove the local span and exit span register mechanism in Java agent scenario.
* Fix config, plugin, and document, as exit span is not required register anymore.
* Try to fix the test case expected data due to no register for exit span.
* Fix toolkit case.
* Remove exit span from plugin test framework document.
* Update protocol, FAQ, and CHANGELOG documents to highlight this change.
* Fix NPE when no entry span in the whole segment. Set endpoint to null in segment entity.
* Fix the snapshot and add inexistence operation name id.
* Fix several async cases.
* Fix undertow test case.
* Fix wrong error log name.
* Keep name consistent with 6.x concepts.
* Try to fix 3 async scenarios.
* Fix okhttp case.
* Fix Spring Async case.
* Fix another NPE
* Fix NPE when first span has no endpoint id when it is local or exit span.
* Still fill first operation name when no endpoint id.
* Move oal tool back into main repo, and fix compile issue.
* Fix two bugs.
* Remove all generated codes.
* Make all oal generated codes out of source control.
* Make mvn compile and package work.
* Fix test cases.
* Make compile right and provide new documents.
* Remove an unnecessary tokens file.
Daming
Jared Tan
吴晟 Wu Sheng
qxo
Adrian Cole
clevertension
ascrutae
xcaspar
ascrutae