Why should this be included in the repository?
New features: Flexible Heredoc and Nowdoc syntax, support for reference assignment and array deconstruction with list(), PCRE2 support, hrtime() function.
Futhermore improved performance over 7.2 by using more code optimization techniques as the creator himself describes in this video at 22:50
https://www.youtube.com/watch?v=rKXFgWP-2xQ