Fix port.

Update version for 3.2.4 release.

Merge pull request apache#544 from OpenSkywalking/fix/sjdbcbug

Plugin test must compile with jdk 1.6, so not allow to use lambda.

Merge pull request apache#482 from clevertension/my-main

fix Illegal group reference

Update screenshots.

Merge pull request apache#432 from wu-sheng/pengys5-patch-2

Update README_ZH.md

Update read for readme.

Set final name for agent module.

UI 3.0.2 is compatible for sky-walking 3.0.3

Prepare for releasing 3.0.2