Split out chunk reading in MultipartUploader for overriding

[akx]

No description provided.

[codecov-io]

Codecov Report

Merging #8 into master will decrease coverage by 0.11%.
The diff coverage is 93.75%.

@@            Coverage Diff             @@
##           master       #8      +/-   ##
==========================================
- Coverage   98.46%   98.34%   -0.12%     
==========================================
  Files          12       12              
  Lines         650      664      +14     
  Branches       69       72       +3     
==========================================
+ Hits          640      653      +13     
  Misses          3        3              
- Partials        7        8       +1

Impacted Files	Coverage Δ
hai/boto3_multipart_upload.py	97.1% <100%> (+0.08%)	⬆️
hai_tests/test_multipart_upload.py	96.92% <92.3%> (-1.2%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 13c27f1...c063622. Read the comment docs.

[ruksi]

lgtm