CHANGELOG in prometheus_exporter-0.4.1 vs CHANGELOG in prometheus_exporter-0.4.2

@@ -1,4 +1,8 @@
+0.4.2 - 30-11-2018
+
+- Fix/Feature: setting a Gauge to nil will remove Gauge (setting to non numeric will raise)
+
 0.4.0 - 23-10-2018
 
 - Feature: histogram support
 - Feature: custom quantile support for summary
 - Feature: Puma metrics