Duration constructor not compatible with MomentJS duration constructor cannot parse "1.02:03:04"

**Describe the bug**
The DayJS duration constructor can only parse a ISO8601
The MomentJS duration constructor can parse a ISO8601 string AND the string "1.02:03:04" to 1 day, 2 hours, 3 min, 4 seconds

**Expected behavior**
Add code to construct a DayJS duration with a string of the following format

Start by locating the DayJS duration constructor and its existing ISO8601 string parsing. Compare the accepted inputs with MomentJS handling of "1.02:03:04"; done when that string constructs a duration representing 1 day, 2 hours, 3 minutes, and 4 seconds.

Written by the indexing model from the issue text.