The previous version naming system worked best for software that had a major release once a year. Development of Imaculum is on-going in a granular way, so the new version name system works better for iteratively updated software. This version (19.04.00) has been released in April 2019:
19 = 2019
04 = April
00 = First release of the month (01 at the end would mean an update to that month's release, 02 a second update, etc.)
