Merge pull request influxdata#2341 from influxdata/updatechangelog

Update Changelog

CHANGELOG.md

@@ -9,9 +9,10 @@
 - [#1965](https://github.com/influxdata/kapacitor/pull/1965): Alert handler for Microsoft Teams, thanks @mmindenhall!
 
 ### Bugfixes
-
 - [#2286](https://github.com/influxdata/kapacitor/pull/2286): Corrected issue with `go vet` invocation in .hooks/pre-commit which would cause the hook to fail, thanks @mattnotmitt!
 - [#1980](https://github.com/influxdata/kapacitor/pull/1980): Fix discovery service lost config, thanks @flisky!
+- [#2335](https://github.com/influxdata/kapacitor/pull/2335): Fix panic when setting a zero interval for ticker, this affected deadman and stats nodes.
+- [#2340](https://github.com/influxdata/kapacitor/pull/2340): Fix a panic on int div-by-zero, instead return an error.
 
 ## v1.5.5 [2020-04-20]