Checklist

• Appropriate tests were added
• Any code changes were done in a way that does not break public API
• All documentation related to code changes were updated
• The new code follows the
  contributor guidelines, in particular the SciML Style Guide and
  COLPRAC.
• Any new documentation only uses public API

Additional context

Now that oop is supported StaticArrays should start working, as shown by the fact most tests already work, some might need adjustments and ensuring that the SArray is passed through and no regular arrays are created midway. FiniteDiff looks like it might not work based on testing so far but let's see.
Fixes #14