PHP and db versions?

[wadestriebel]

We bumped the PHP version requirements (more details in the release notes for 1.0.0):

@james

PHP versions . ClassicPress requires PHP 5.6 or higher, as the first step in a strategy for encouraging ClassicPress users to keep their sites up to date. ClassicPress 1.0.0 also adds PHP 7.3 compatibility for all unit-tested code in the core software.

We should add those kind of details to the docs site. I know we have some work going on there at the moment (I think @ElisabettaCarrara is involved in it).