docs: add eps1lon as a contributor (#298)

* docs: update README.md

* docs: update .all-contributorsrc


Co-authored-by: null <46447321+allcontributors[bot]@users.noreply.github.com>

Author: allcontributors[bot]

.all-contributorsrc

@@ -624,6 +624,15 @@
         "test",
         "doc"
       ]
+    },
+    {
+      "login": "eps1lon",
+      "name": "Sebastian Silbermann",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/12292047?v=4",
+      "profile": "https://twitter.com/sebsilbermann",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "repoHost": "https://github.com"