iAnt

The single line in `StringUtils#getLogstashStyleDate(long)` produces about 7-8% of total stagemonitor TLAB allocation (GC pressure) in my production system. The optimizaton is pretty trivial: wrap stateful `DateFormat` instances into `ThreadLocal`...

"additionalItems" should not be honored if "items" is an object.

6

As per [json-schema specification](http://json-schema.org/latest/json-schema-validation.html#rfc.section.5.9): > if "items" is not present, or its value is an object, validation of the instance always succeeds, regardless of the value of "additionalItems"; Currently (v...