- add -html5 option for javadoc under java9+
- integration-test.sh use java 10 build

- use thread kotlin function
- protected for finalize method

- use CtClass.getDeclaredMethod(String, CtClass[])
  instead of CtClass.getDeclaredMethod(String)
- javadoc of CtClass.getDeclaredMethod(String):
  If there are multiple methods with the specified name,
  then this method returns one of them.

- add contributor @xwshiustc

timestamp INFO [thread name] class-name: message info