Update to 0.16

[Igosuki]

I have no idea why, but despite the deprecation, pyproto is still needed, otherwise CustomList doesn't work. Additionally, CustomDict is not considered a sequence...

[codecov-commenter]

Codecov Report

Merging #25 (26ac099) into main (ec012da) will decrease coverage by 0.18%.
The diff coverage is 95.23%.

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
- Coverage   80.99%   80.81%   -0.19%     
==========================================
  Files           4        4              
  Lines        1021     1027       +6     
==========================================
+ Hits          827      830       +3     
- Misses        194      197       +3     

Impacted Files	Coverage Δ
src/de.rs	88.02% <95.23%> (-0.41%)	⬇️

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[davidhewitt]

Thanks for this!

Regarding the #[pyproto] deprecation, yes, it's a little unfortunate. Half of the pain is in PyO3 and the other half is here in pythonize.

The crux of the problem is illustrated by https://pyo3.rs/latest/migration.html#container-magic-methods-now-match-python-behavior. Both Python and PyO3 now generate containers implementations which satisfy both the "mapping" and "sequence" checks by default. (This is different in the #[pyproto] approach where the differences were explicit.) I would like to add some functionality to PyO3 to tease these apart again.

To deal with this, pythonize should perhaps try the sequence branch, and if that fails, the mapping branch.

[Igosuki]

@davidhewitt Thanks, that was the problem I could'nt pick between the two sequence/mapping signatures.