Add developer core team to AUTHORS file

Adds Johannes Schmoelder, Jaygihosh Rao, and Jazib Hassan to the AUTHORS
file.

AUTHORS

@@ -4,4 +4,7 @@ Sebastian Schnittert (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juel
 Andreas Püttmann (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juelich, Germany): Parameter sensitivities, Jacobians via AD, AD techniques (block- & band-compression)
 Samuel Leweke (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juelich, Germany): Complete rewrite of v3.0 from scratch, build system, code & framework design and architecture, Matlab interface, file format, frontends (MEX, CLI), domain decomposition (multi-unit systems), reactions, 2D general rate model (paid by GE Healthcare), multiple particle types (paid by GE Healthcare)
 William Heymann (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juelich, Germany): Networks of unit operations, compiler flag optimization
-Salah Azzouzi (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juelich, Germany): Core-shell particles (paid by GE Healthcare)
+Salah Azzouzi (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juelich, Germany): Core-shell particles (paid by GE Healthcare)
+Johannes Schmölder (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juelich, Germany)
+Jayghosh Rao (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juelich, Germany)
+Jazib Hassan (Forschungszentrum Juelich GmbH, IBG-1: Biotechnology, Juelich, Germany)