Update to pyo3 0.21

[a1phyr]

This also makes the lowest supported version to 0.21 to migrate to the new Bound API.

Closes #48

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 11.11111% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 26.38%. Comparing base (615d8f3) to head (d17a02a).
Report is 5 commits behind head on main.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #45      +/-   ##
==========================================
- Coverage   26.57%   26.38%   -0.19%     
==========================================
  Files           1        1              
  Lines         143      144       +1     
==========================================
  Hits           38       38              
- Misses        105      106       +1     

Files	Coverage Δ
src/lib.rs	26.38% <11.11%> (-0.19%)	⬇️

[vorner]

Apart from the existing comment, it seems the update to the minimal pyo3 version also requires newer rustc due to newer needed edition in some transitive dependencies. Can you also update the CI and the rust-version in the Cargo.toml?

[jamestwebber]

I tested this on my project and I think this PR is good to go? The only issue is the coverage report which looks kind of squirrelly to me--I can't understand why it's reporting those lines are newly uncovered.

[Nicoretti]

Hi @ all,

just stumbled upon this issue and this PR, is there anything I can do to push this PR forward?

best
Nico

[a1phyr]

I think that the best we can do is a friendly ping to @vorner

[vorner]

Ups, sorry… I've had too much other things to do, I've merged and released it now.

[Nicoretti]

@vorner thanks, for merging and for providing the library 👍 !