v0.2.0

Added

• Support shelve and unshelve command
  • Bug: Both of them have some duplicated codes with others. Will try to fix it in the future.
• A brand new object specification and parser to convert p4's dict object to JS object, with array support
• Use GitHub Actions to create releases

Changed

• A lot of changes in the process of learning TypeScript, with far less type casts in code.

Fixed

• change command's interactive mode no longer throws exception when invalid change is specified
• p4 status no longer gives a blank output when it is slow
  • When the internally-invoked p4 change command exits before p4 status command, it looks like that we are not able to catch the exit event. The reason is unknown. Changing the event to close solves the problem, and we should try to investigate it in the future.