CHANGELOG.md in benchmark_driver-0.15.10 vs CHANGELOG.md in benchmark_driver-0.15.11

@@ -1,4 +1,8 @@
+# v0.15.11
+
+- Correctly calculate an average result on `--repeat-result=average`
+
 # v0.15.10
 
 - Right-justify calculated results in `markdown` output
 
 # v0.15.9