[BUG] Tests failing on Linux

[EliteMasterEric]

https://github.com/openfl/svg/blob/5842f1c636c848e31ef9f72b5962bf78a6611b21/test.hxml#L6

I had to change this line to -cp format to get it to build.

After that, tests succeeded except for:

Class: MacroTest .
Class: SvgGenerationTest ...!.......
    FAIL: massive.munit.AssertionException: fancy-sun.svg has 28% pixels different, which is over the threshold of 10% at SvgGenerationTest#compareGeneratedToExpected (246)