Add QuickCheck tests for FromJSON / ToJSON instances

[alanz]

We are hand coding the JSON instances.

Provide quickcheck tests that confirm that we can successfully roundtrip all JSON instances.

i.e. decode . encode == id

[bitemyapp]

Could we have people make a comment when they're taking a shot at a ticket and let others know when they're setting it aside if they didn't reach a PR-able state?

[alanz]

Or just assign the issue to themselves. The "Asignee" button on the right.

[bitemyapp]

@alanz ah right, at'll do 'er. 👍

[cocreature]

Note that you can only assign issues to you if you are part of the project, so especially for newcomers this is not an option.

[alanz]

ok. does anyone need to be added at the moment?

[bitemyapp]

@alanz perhaps make it known that a comment is an acceptable fallback if somebody that isn't on the project yet wants to claim a ticket and doesn't want to wait to get added? Then someone that is on the project can assign them.