Stream IOs

[Blacksmoke16]

Description

Resolves #14 Resolves #15 Resolves #17 Resolves #19

• Refactors much of oq to more easily support additional formats.
  • .deserialize for Xml converter will follow later.
• Follows up on #6 to extend the streaming of data to YAML and XML in addition to JSON.
  • This makes oq much much more memory efficient as nothing is loaded into memory.

Big shoutout to @asterite for the gist that made this PR possible.

TODO

• [x] Support #text keys again
• [x] Add specs for each format
• [x] Make sure current jq features still work

[Blacksmoke16]

@asterite would you mind giving this a review if you get a minute?

[asterite]

@Blacksmoke16 Sure! I'll do it later today.