[Feature Request] Please support MJD format in Carbon

[wakatara]

Feature Request

Is your feature request related to a problem? Please describe:

At the moment conversions to and from MJD (modified julian day) and JD (common astronomy formats) are a bit tricky in Go. It would be awesome if these were supported in Carbon.

Describe the feature you'd like:

Have Carbon recognize and convert between it's various formats, the MJD format (mostly to iso standard string format), and the nice way you handle strings and such in the library.

Describe alternatives you've considered:

There is an older library that does this but it is very developer unfriendly compared to yours.

Teachability, Documentation, Adoption, Migration Strategy:

I'd be using this in a project API for a joint project between UHawaii and NASA that I am currently in the middle of.

[gouguoyin]

I will research your suggestions.

[gouguoyin]

Supported since v2.3.7
https://github.com/golang-module/carbon/blob/master/calendar/julian/README.md