* fix #370

* add unit tests for importting submodule in xparl

* add comment

* revert scripts.py

* yapf

* unit test

* fix relative path bug

* read files using relative path

* remove print

* update CMake

* add try times

* fix the bug in log_server_test.py

* fix relative path bug&add unit test

* update utils.py

* update Cmake

* fix pyc bug

* Update utils.py

* fix the bug of recursive creating actors

* add comment

* update comment

* rename test files

* fix workspace bug

* fix the bug of distributing files

* update comment

* ban passing a absolute path