Labels

• bug

  Something isn't working
• documentation
• duplicate

  This issue or pull request already exists
• enhancement

  New feature or request
• good first issue

  Good for newcomers
• help wanted

  Extra attention is needed
• invalid

  This doesn't seem right
• level_0

  difficulty level of resolving this issue is 0 (documentation related only)
• level_1

  difficulty level of resolving this issue is 1 (need to add new code)
• level_2

  difficulty level of resolving this issue is 2 (add tool/codes, re-design some existed code)
• on_hold

  Idea may have problem
• question

  Further information is requested
• wontfix

  This will not be worked on