Added new contributions

Got to make sure we're up to date before releasing 4.0

Author: SecondeJK

CONTRIBUTORS.md

@@ -18,6 +18,10 @@ In no particular order, we would like to thank all the contributors who have
 helped work on this library. We truly value our open source community and the
 work that they do.
 
+* [Ash Allen](https://github.com/ash-jc-allen)
+* [Thiago Locks](https://github.com/thiagolcks)
+* [Derick Rethans](https://github.com/derickr)
+* [Viktor Szépe](https://github.com/szepeviktor)
 * [Christopher Lass](https://github.com/arubacao)
 * [Greg Holmes](https://github.com/GregHolmes)
 * [Vincent Klaiber](https://github.com/vinkla)