Moved Configuration::standard() and ::legacy() to the config module

[VictorKoenders]

No description provided.

[codecov-commenter]

Codecov Report

Merging #481 (69f08eb) into trunk (d8ba21a) will increase coverage by 0.01%.
The diff coverage is 90.00%.

@@            Coverage Diff             @@
##            trunk     #481      +/-   ##
==========================================
+ Coverage   66.44%   66.45%   +0.01%     
==========================================
  Files          38       38              
  Lines        2691     2692       +1     
==========================================
+ Hits         1788     1789       +1     
  Misses        903      903              

Impacted Files	Coverage Δ
src/de/decoder.rs	65.00% <ø> (ø)
src/enc/encoder.rs	57.14% <ø> (ø)
src/lib.rs	100.00% <ø> (ø)
tests/issues/issue_474.rs	0.00% <0.00%> (ø)
src/config.rs	80.95% <76.92%> (ø)
tests/alloc.rs	100.00% <100.00%> (ø)
tests/basic_types.rs	99.20% <100.00%> (+<0.01%)	⬆️
tests/derive.rs	100.00% <100.00%> (ø)
tests/issues/issue_431.rs	100.00% <100.00%> (ø)
tests/issues/issue_459.rs	100.00% <100.00%> (ø)
... and 3 more

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