pyenum-derive 0.0.2

#[derive(PyEnum)] procedural macro for the `pyenum` crate.
Documentation 
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error: variant `B` has discriminant `1`, which was already used by `A`; Python would make the second variant an alias of the first and break Rust-side round-trip identity
  --> tests/ui/fail/duplicate_auto_intenum.rs:10:5
   |
10 |     B = 1,
   |     ^