Add dataclass passthrough

[wyfo]

No description provided.

[codecov-commenter]

Codecov Report

Merging #326 (18befcb) into master (baa6e63) will increase coverage by 0.08%.
The diff coverage is 96.07%.

@@            Coverage Diff             @@
##           master     #326      +/-   ##
==========================================
+ Coverage   86.05%   86.13%   +0.08%     
==========================================
  Files          67       67              
  Lines        5888     5880       -8     
  Branches     1224     1218       -6     
==========================================
- Hits         5067     5065       -2     
+ Misses        600      595       -5     
+ Partials      221      220       -1     

Impacted Files	Coverage Δ
apischema/serialization/__init__.py	85.01% <90.90%> (+0.46%)	⬆️
apischema/serialization/methods.py	89.13% <100.00%> (+1.50%)	⬆️

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