retrieving actual errors

[nsheff]

I'd like to get a list of errors, for example, like this:

https://python-jsonschema.readthedocs.io/en/stable/errors/

but right now there's no real way to do this; could we restructure to allow this kind of construct instead of just throwing the exceptions?

[nleroy917]

Is this resolved in #41 ?

[nsheff]

This now possible in v0.2.0