DateTime::Calendar::Julian version 0.102 was released November 9 2019. This release fixes a bug that was exposed two and a half years ago when DateTime 1.43 made an API change which DateTime::Calendar::Julian failed to track. The result of this was a change in the serialization of the object, from "date T time" to "date J time".
Because DateTime documents serialization as returning an ISO-8601 string, I decided to restore the pre-DateTime-1.43 behavior. Thanks to Jean Forget for finding and isolating this problem. Tom Wyant
