Test with preact-compat

[bahrus]

Maybe there's some obvious reason why it isn't needed, but it isn't obvious to me due to my murky understanding -- would it make sense to also test preact with the preact-compat react compatibility layer?

I mean as a separate test. Testing without it is probably more useful. But would be good to know if anything negative happens when the compatibility layer is needed.

[robdodson]

oh good point. yeah we should at least check to make sure it doesn't break anything especially around events