Setting RTC from epoch

[tripflex]

Would it be possible to add epoch handling for this library? SNTP library for mos returns value in epoch, so it only makes sense that any libs for setting RTC would be very beneficial to handle setting the value from epoch ... otherwise everyone who uses this lib will have to do it manually.

Here's an example I found of doing this:
https://github.com/arduino-libraries/RTCZero/blob/master/src/RTCZero.cpp#L372-L440