Update changelog for v1.5.3

wjhsf · wjhsf · commit 40894e3947b1 · 2021-07-27T14:33:31.000-04:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,7 @@
+### 1.5.3
+* Different case headers specified when invoking a method will now properly be merged, rather than only one being used.
+Headers specified when invoking a method will overwrite headers specified in the client config, regardless of case.
+
 ### 1.5.2
 * Security updates
 
