- fix(MongoMemoryReplSet): remove unused variable
- fix: use "db_util.isNullOrUndefined"
- fix(MongoInstance): modify "kill"'s debug logs
- fix(MongoBinaryDownload): extend 404 error
- style: add eslint rule "curly" set to "all"
- build: set least required nodejs version to 10.15.0 (it wasnt tested anymore, and dependencies required it since 6.6.3)
(non-automated release-message)