Updates, Release 2.0.0

[klodoma]

Changes:

• update composer.json dependencies to newer packages
• php >= 7.3 supported, due to dependencies
• fixed Unit-tests

Upon release the linked repository has to be removed from composer.json
(CI is failing if it doesn't exist)

    "repositories": [
        {
            "type": "git",
            "url": "https://github.com/klodoma/portphp-portphp"
        }
    ]

[jverdeyen]

Any updates on this one? I'm using the forked version for now! Thanks for all the work!

[andrekutianski]

no one to approve pulls?

[ddeboer]

Most of this is done in #19.