Fix PSR4 auloload

[mejta]

Please merge my pull requests. I have a package in my dependencies, that use an array in autoloaders. That is correct according to documentation (see https://getcomposer.org/doc/04-schema.md#psr-4), but not supported by Mozart. Thank you.

[BrianHenryIE]

This is already addressed in #63 (unmerged). And as I say in the comment on #47, the best approach is probably to use Composer's own Factory::create() to parse composer.json.

I'm not sure why "Lint and test / PHP 7.3" is failing. I'll try look into it during the week.

Which package is failing? (to test)

[mejta]

@BrianHenryIE It's https://packagist.org/packages/heureka/overeno-zakazniky. Thank you for looking at it.

[BrianHenryIE]

This is my fault. The library (my own) that is used in tests requires PHP 7.4.

I'm not sure why this came up just here for you. i.e. how was I able to commit it without my own commit failing its GitHub Actions/CI tests.

I had pinned the commit that should be used so we'd avoid issues like this (and I thought the pinned commit only needed 7.2, but I guess not).

Anyway, here's the error I got when running your PR locally on 7.3:

Problem 1
  - Root composer.json requires brianhenryie/wp-logger dev-master#dd2bb0665e01e11b282178e76a2334198d3860c5 -> satisfiable by brianhenryie/wp-logger[dev-master].
  - brianhenryie/wp-logger dev-master requires php >=7.4 -> your php version (7.3.27) does not satisfy that requirement.

The red check here on GitHub is certainly not anything introduced by this PR.

Adding the following phpversion check in the test case seems appropriate:

if (version_compare(phpversion(), '7.4', '<')) {
    $this->markTestSkipped("PHP version isn't high enough");
}