Remove email addresses from list of contributers and add gh handles instead

Author: andersfugmann

README.md

@@ -40,7 +40,7 @@ fields are not packed by default.
 marked optional, and does not *strictly* comply to the protobuf
 specification.
 
-[^3]: Groups has been deprecated by google and should not be used.
+[^3]: Groups has been deprecated by Google and should not be used.
 
 
 ## Types
@@ -508,13 +508,13 @@ This work is based on
 Thanks to [Issuu](https://issuu.com) who initially developed this library/plugin.
 
 Thanks to all contributers:
-* Anders Fugmann <anders@fugmann.net>
-* Andreas Dahl <andreas@hrdahl.dk>
-* Dario Teixeira <dte@issuu.com>
-* Kate <kit.ty.kate@disroot.org>
-* Martin Slota <msl@issuu.com>
-* Nymphium <s1311350@gmail.com>
-* Rauan Mayemir <rauan@mayemir.io>
-* Tim McGilchrist <timmcgil@gmail.com>
-* Virgile Prevosto <virgile.prevosto@m4x.org>
-* Wojtek Czekalski <me@wczekalski.com>
+* Anders Fugmann, @andersfugmann
+* Andreas Dahl, @AndreasDahl
+* Dario Teixeira, @darioteixeira
+* Kate, @kit-ty-kate
+* Martin Slota, @martinslota
+* Satoru Kawahara, @nymphium
+* Rauan Mayemir, @rauanmayemir
+* Tim McGilchrist, @tmcgilchrist
+* Virgile Prevosto, @vprevosto
+* Wojtek Czekalski, @wokalski