All rules that uses custom CSS properties is removed

[Grawl]

This issue is a copy of nochso/html-compress-twig#14

Input:

{% htmlcompress %}
<style>
.foo {
    --a: 1em;
    padding: var(--a);
    color: blue;
}
</style>
{% endhtmlcompress %}

Expected output:

<style>.foo {--a: 1em;padding: var(--a);color: blue;}</style>

Actual output:

<style>.foo {--a: 1em;color: blue;}</style>

[Grawl]

It's because an older version of this package in my project.

I commented out new CssMinCompressor() in constructSmallest() and problem is gone.

[WyriHaximus]

Resolving this upstream: WyriHaximus/php-css-compress#28

[WyriHaximus]

Just release 3.0.0 that includes the fix for this. Also opened nochso/html-compress-twig#16 to get this version available in that package.