Add myself as Swedish translator

Change-Id: Ib1cb4f9b271a85c07507b158b00454cdd3a88b66
diff --git a/CHANGELOG.mkdn b/CHANGELOG.mkdn
index 059c618..5cfd31c 100644
--- a/CHANGELOG.mkdn
+++ b/CHANGELOG.mkdn
@@ -46,6 +46,7 @@
 * Spanish: PeRiJeY, KalimochoAz
 * Catalan: Oriol Pellicer
 * Finnish: Antti Leukkunen
+* Swedish: Patrik Kullman
 * Polish: Maciej Rozbicki
 * Korean: Inseok Lee
 * Traditional Chinese: Ladios Jonquil