Implement chunked transfer encoding

[clue]

Refs #5

[clue]

Receiving incoming responses with chunked transfer encoding has been resolved via #58.

We may still want to implement sending requests with chunked transfer encoding.

[ghost]

@clue Since this package links now to the higher level implementation buzz, do we still want to implement sending chunked transfer encoding in this component? This would mean moving the logic from buzz to this component (which should probably be fairly straight forward).

[WyriHaximus]

@CharlotteDunois yes that's the goal

[clue]

What @WyriHaximus said :-)

The (longer-term) goal is to make https://github.com/clue/reactphp-buzz redundant in the future so that we can deprecate it and only rely on @reactphp's HTTP component 💪

[clue]

I'm closing this as it is already supported by the new HTTP client that has been merged into react/http via reactphp/http#368 You should upgrade as per #152 👍