Update contributors (#1265)

- Add Jack Xia (JckXia)
- Add Vladimir Morozov (vmoroz)
- Move to emeritus Gabriel Schulhof (gabrielschulhof)
- Move to emeritus Jim Schlight (jschlight)
- Alphabetize list of contributors

Author: KevinEady

README.md

@@ -291,19 +291,21 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for more details on our philosophy around
 | ------------------- | ----------------------------------------------------- |
 | Anna Henningsen     | [addaleax](https://github.com/addaleax)               |
 | Chengzhong Wu       | [legendecas](https://github.com/legendecas)           |
-| Gabriel Schulhof    | [gabrielschulhof](https://github.com/gabrielschulhof) |
-| Jim Schlight        | [jschlight](https://github.com/jschlight)             |
+| Jack Xia            | [JckXia](https://github.com/JckXia)                   |
+| Kevin Eady          | [KevinEady](https://github.com/KevinEady)             |
 | Michael Dawson      | [mhdawson](https://github.com/mhdawson)               |
-| Kevin Eady          | [KevinEady](https://github.com/KevinEady)
 | Nicola Del Gobbo    | [NickNaso](https://github.com/NickNaso)               |
+| Vladimir Morozov    | [vmoroz](https://github.com/vmoroz)                   |
 
 ### Emeritus
 | Name                | GitHub Link                                           |
 | ------------------- | ----------------------------------------------------- |
 | Arunesh Chandra     | [aruneshchandra](https://github.com/aruneshchandra)   |
 | Benjamin Byholm     | [kkoopa](https://github.com/kkoopa)                   |
-| Jason Ginchereau    | [jasongin](https://github.com/jasongin)               |
+| Gabriel Schulhof    | [gabrielschulhof](https://github.com/gabrielschulhof) |
 | Hitesh Kanwathirtha | [digitalinfinity](https://github.com/digitalinfinity) |
+| Jason Ginchereau    | [jasongin](https://github.com/jasongin)               |
+| Jim Schlight        | [jschlight](https://github.com/jschlight)             |
 | Sampson Gao         | [sampsongao](https://github.com/sampsongao)           |
 | Taylor Woll         | [boingoing](https://github.com/boingoing)             |