Dynamic array support

[carver]

What was wrong?

Closes #94

How was it fixed?

Backported #90 and #92 sequentially (plus some in-commit patches to make it v1-compatible)

Cute Animal Picture

[carver]

@davesque Have you seen this ~"examples too slow" error from hypothesis on pypy before? I'm sure I can dig in and figure it out, just curious if you had a quick fix handy.

[pipermerriam]

@carver probably worth just creating an issue and adding the too_slow to the ignored health checks.

[carver]

Ok, ready for review, then.

[davesque]

@carver My "quick fix" lately has just been to re-run the failed job until is passes :). I believe the failing tests are the ones which do property testing to check coder class behavior. They should actually be deleted since they aren't that useful. That's the real fix.

[davesque]

@carver Actually, I was wrong. I think the issue was being caused by a recursive strategy that was generating too many leaves. I made a one-line PR for that issue specifically. I think you can revert the fix you added to this PR.

[carver]

Cool, I removed the slow test exception. I'll wait to merge until you review, @davesque

[davesque]

I think this is good to go, Jason.