Docs: add d-kad as a contributor for research, and code (#605)

* docs: update README.md

* docs: update .all-contributorsrc

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: Ted Turocy <ted.turocy@gmail.com>

Author: allcontributors[bot]

.all-contributorsrc

@@ -54,6 +54,16 @@
         "research",
         "code"
       ]
+    },
+    {
+      "login": "d-kad",
+      "name": "Daniel Kadnikov",
+      "avatar_url": "https://avatars.githubusercontent.com/u/165307096?v=4",
+      "profile": "https://github.com/d-kad",
+      "contributions": [
+        "research",
+        "code"
+      ]
     }
   ]
 }

README.md

@@ -49,6 +49,7 @@ installable via PyPI.
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://edchalstrey.com/"><img src="https://avatars.githubusercontent.com/u/5486164?v=4?s=100" width="100px;" alt="Ed Chalstrey"/><br /><sub><b>Ed Chalstrey</b></sub></a><br /><a href="#code-edwardchalstrey1" title="Code">💻</a> <a href="#doc-edwardchalstrey1" title="Documentation">📖</a> <a href="#tutorial-edwardchalstrey1" title="Tutorials">✅</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/d-kad"><img src="https://avatars.githubusercontent.com/u/165307096?v=4?s=100" width="100px;" alt="Daniel "/><br /><sub><b>Daniel </b></sub></a><br /><a href="#research-d-kad" title="Research">🔬</a> <a href="#code-d-kad" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/StephenPasteris"><img src="https://avatars.githubusercontent.com/u/140617768?v=4?s=100" width="100px;" alt="StephenPasteris"/><br /><sub><b>StephenPasteris</b></sub></a><br /><a href="#research-StephenPasteris" title="Research">🔬</a> <a href="#code-StephenPasteris" title="Code">💻</a></td>
     </tr>
   </tbody>