Does this library follow RFC5545 which obsoletes the RFC2445 (since 2009)?

[twnaing]

According to the document, 5545 obsoletes 2445 since 2009.

The README.md states that,

with a goal of being fully compliant with iCalendar spec (RFC2445)

I stumble upon this while trying to use this gem (RFC2445) with rrule in javascript (RFC5545).

I am not familiar with the RFC5545 or RFC2445.