update contributors list (#131)

motivation: give credit where credit due

changes: update CONTRIBUTORS.txt with recent contributions

Author: tomerd

CONTRIBUTORS.txt

@@ -11,11 +11,23 @@ needs to be listed here.
 
 ### Contributors
 
+- Adam Fowler <adamfowler71@gmail.com>
+- Andrea Scuderi <andreascuderi@ymail.com>
+- Brendan Kirchner <brendankirchner@me.com>
+- Bryan Bartow <bryanbartow@gmail.com>
+- Bryan Moffatt <bmoffatt@users.noreply.github.com>
+- Christoph Walcher <christoph-wa@gmx.de>
+- Colton Schlosser <cltnschlosser@gmail.com>
+- Eneko Alonso <eneko.alonso@gmail.com>
 - Fabian Fett <fabianfett@mac.com>
 - George Barnett <gbarnett@apple.com>
 - Johannes Weiss <johannesweiss@apple.com>
+- Max Desiatov <max@desiatov.com>
 - Norman Maurer <norman_maurer@apple.com>
+- Ro-M <Ro-M@users.noreply.github.com>
 - Tomer Doron <tomer@apple.com>
+- Zhibin Cai <TonyChol@users.noreply.github.com>
+- pmarrufo <p_marrufo94@hotmail.com>
 - tachyonics <simon@tachyonics.io>
 
 **Updating this list**