Update AUTHORS.txt

Author: Sean-Der

AUTHORS.txt

@@ -11,6 +11,7 @@ cnderrauber <zengjie9004@gmail.com>
 Gabor Pongracz <gabor.pongracz@proemergotech.com>
 Hugo Arregui <hugo.arregui@gmail.com>
 Hugo Arregui <hugo@decentraland.org>
+Juho Nurminen <juhonurm@gmail.com>
 Juliusz Chroboczek <jch@irif.fr>
 Kevin Wang <kevmo314@gmail.com>
 lllf <littlelightlittlefire@gmail.com>
@@ -21,6 +22,8 @@ Sean DuBois <seaduboi@amazon.com>
 Sean DuBois <sean@siobud.com>
 Simone Gotti <simone.gotti@gmail.com>
 Steffen Vogel <post@steffenvogel.de>
+tanghao <tanghao1996.seu@gmail.com>
+tanghao <tanghao@bilibili.com>
 Woodrow Douglass <wdouglass@carnegierobotics.com>
 
 # List of contributors not appearing in Git history