[Collection] Contributions from Xinxiang

[xgao28]

Here are the pull requests in which I implemented some of the code of this project:

• 114

• 63

• 40

• 12

Here are the issues that I closed or contributed by the pull requests:

• 55 in #44

• 30 in #7

• 3

Here are the issues and discussions that I commented:

• 37

• 38

Here are the pull requests that I reviewed:

• 76

• 62

• 39

• 19

• 15

• 5