Explicitly mark nullable arguments (PHP8.4 compat)

Update README.md

Require pear/ole stable, now it exists

Update README.md

Remove PHP 7 reference from README

Merge pull request #23 from ChristianVermeulen/patch-1

Make package available for php 8

Merge pull request #21 from fortix/fixed-incompatible-call

fixed incompatible call

Merge pull request #16 from unstoppablecarl/patch-1

added getter for properties to Message class

Merge pull request #8 from adjenks/master

Separate PT_CLSID from PT_MV_CLSID

PR-4 requires PHP 7.1

PR-4 requires PHP 7.1