Small async http client refactor

[chanhosuh]

Description

Explain what you did and why, ser.

Hygiene checklist

• Changelog entry
• Everything public has a Numpy-style docstring
  (modules, public functions, classes, and public methods)
• Commit history is cleaned-up with minor changes squashed together
  and descriptive commit messages following Tim Pope's style

Cute Animal Picture

[github-actions]

Coverage report

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
curvesim/network
coingecko.py
curve_prices.py
http.py
subgraph.py
web3.py
curvesim/pipelines/vol_limited_arb
trader.py
curvesim/pool/cryptoswap/calcs
__init__.py
tricrypto_ng.py
Project Total

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