chore(core): credit contributors

Author: JamieMason

package.json

@@ -29,7 +29,11 @@
     "Matt Sprague (https://github.com/uforic)",
     "Max Rohde (https://github.com/mxro)",
     "Michał Warać (https://github.com/auto200)",
+    "Mike North (https://github.com/mike-north)",
     "Nick Saunders (https://github.com/nsaunders)",
+    "Nikolas Schröter (https://github.com/nwidynski)",
+    "Petter Sæther Moen (https://github.com/petter)",
+    "Samuel Attard (https://github.com/MarshallOfSound)",
     "Siraj (https://github.com/Syhner)",
     "Steve Beaugé (https://github.com/stevebeauge)",
     "Stuart Knightley (https://github.com/Stuk)",