CHANGELOG.md in api_client-0.5.19 vs CHANGELOG.md in api_client-0.5.20

@@ -1,4 +1,9 @@
+# 0.5.20
+
+* brought back jruby support
+* updated CI pipeline
+
 # 0.5.19
 
 * introduced PATCH requests.
 * brought back ruby < 2.1 compatibility. Process::CLOCK_MONOTONIC is not present until ruby 2.2. There was a breaking change since 0.5.16.