introduce PublicKey::isEqual to compare public keys by fingerprint

make sure PublicKey is an X.509 certificate, add PublicKey::x509Cert

fix return value

Revert "introduce PublicKey::compareTo function to compare public keys by fingerprint"

This reverts commit 43c2e1ee414326b0efdc311db9b9a300374b7a6a.

Revert "add PublicKey::pemStr"

This reverts commit 8f8c006cd2d3813e43d95c8a29abb4030cd03f27.

add PublicKey::pemStr

introduce PublicKey::compareTo function to compare public keys by fingerprint

prepare for release

update psalm.xml.dist

cleanup `src/Tpl.php`, remove unneeded functionalities

source formatting

add templates to static analysis

fix port in Makefile

update php.mod

add extensions required to php.mod

update php.mod

fix link to FrkoIdP

fix fromposer files

add php.mod and php-dev.mod

mention CVE in CHANGES