Standardize api keys to CamelCase

Fix #1011

Instead of dumping JSON, we now select which keys we want to send.
Right now I put the same as before, all the exported variables but with the keys in CamelCase.

If you think we should hide some keys from inspect, now is the time to say so :) @crosbymichael @unclejack

This is a `"breaking"` change. I used `""` because we say to people not to rely to much on inspect as it might break :) Hopefully with this change, I'll become more stable.

We didn't break compatibility, if you hit with `/v.1.11` or lower, you'll get the old keys. /cc @discordianfish :smile: