Config rewrite

[ZoeyR]

No description provided.

[codecov-commenter]

Codecov Report

Merging #412 (345406f) into feature/deserde (466bb3d) will increase coverage by 0.21%.
The diff coverage is 93.54%.

@@                 Coverage Diff                 @@
##           feature/deserde     #412      +/-   ##
===================================================
+ Coverage            73.85%   74.07%   +0.21%     
===================================================
  Files                   39       39              
  Lines                 2586     2592       +6     
===================================================
+ Hits                  1910     1920      +10     
+ Misses                 676      672       -4     

Impacted Files	Coverage Δ
src/de/decoder.rs	71.42% <ø> (ø)
src/de/impls.rs	76.20% <ø> (ø)
src/enc/encoder.rs	71.42% <ø> (ø)
src/enc/impls.rs	90.86% <ø> (ø)
src/config.rs	88.23% <88.23%> (+38.23%)	⬆️
src/features/impl_alloc.rs	100.00% <100.00%> (ø)
src/features/impl_std.rs	77.77% <100.00%> (ø)
src/lib.rs	100.00% <100.00%> (ø)
tests/std.rs	100.00% <100.00%> (ø)
tests/utils.rs	95.23% <100.00%> (ø)

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