add missing contributors

Author: kandersolar

docs/sphinx/source/whatsnew/v0.13.0.rst

@@ -103,3 +103,10 @@ Contributors
 * omahs (:ghuser:`omahs`)
 * Adam R. Jensen (:ghuser:`AdamRJensen`)
 * Marion Schroedter-Homscheidt (:ghuser:`mschroedter`)
+* Anton Driesse (:ghuser:`adriesse`)
+* Mark Mikofski (:ghuser:`mikofski`)
+* Ioannis Sifnaios (:ghuser:`IoannisSifnaios`)
+* Mark Campanelli (:ghuser:`markcampanelli`)
+* Paul Gilman (:ghuser:`cpaulgilman`)
+* Yu Xie (:ghuser:`xieyupku`)
+* Grant Buster (:ghuser:`grantbuster`)