(wip) Iterator based parsing

[trkohler]

This is work in progress, but was published to receive an initial feedback.

connect: #53

[codecov]

Codecov Report

Attention: Patch coverage is 92.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 78.84%. Comparing base (afb133b) to head (ca4dc7a).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
src/stream.rs	92.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #142      +/-   ##
==========================================
+ Coverage   78.67%   78.84%   +0.17%     
==========================================
  Files          39       40       +1     
  Lines        1449     1475      +26     
==========================================
+ Hits         1140     1163      +23     
- Misses        309      312       +3     

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