speedup string parsing by copying serde a little

[samuelcolvin]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #58 will improve performances by 49.96%

_{Comparing string-parsing-speedup (e5112ef) with main (0b21d4a)}

Summary

⚡ 2 improvements
✅ 43 untouched benchmarks

🆕 6 new benchmarks

Benchmarks breakdown

	Benchmark	main	string-parsing-speedup	Change
⚡	x100_jiter_value	6.8 µs	5.5 µs	+23.94%
🆕	sentence_serde_value	N/A	24.4 µs	N/A
🆕	sentence_jiter_iter	N/A	18.3 µs	N/A
⚡	x100_jiter_iter	4 µs	2.7 µs	+49.96%
🆕	python_parse_x100_not_cached	N/A	9.7 µs	N/A
🆕	python_parse_x100	N/A	10 µs	N/A
🆕	x100_serde_iter	N/A	5.9 µs	N/A
🆕	sentence_jiter_value	N/A	20.4 µs	N/A

[codecov]

Codecov Report

Merging #58 (e5112ef) into main (0b21d4a) will increase coverage by 0.22%.
The diff coverage is 98.38%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #58      +/-   ##
==========================================
+ Coverage   95.12%   95.35%   +0.22%     
==========================================
  Files           8        8              
  Lines        1067     1097      +30     
==========================================
+ Hits         1015     1046      +31     
+ Misses         52       51       -1     

Files	Coverage Δ
src/string_decoder.rs	94.63% <98.38%> (+2.19%)	⬆️

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