impl_hash! is incompatible with 32-bit word size

[MarquessV]

When building for 32-bit architectures, impl_hash! will cause a compilation failure:

error[E0308]: mismatched types
  --> ...\rigetti-pyo3-a2bd858c711b766b\d77377e\src\traits.rs:66:38
   |
58 | macro_rules! impl_hash {
   | ---------------------- in this expansion of `impl_hash!`
...
66 |                 isize::from_ne_bytes(bytes)
   |                 -------------------- ^^^^^ expected an array with a fixed size of 4 elements, found one with 8 elements
   |                 |
   |                 arguments to this function are incorrect

This is because bytes is the stored result of Hasher::finish, an i64, which can't be used to build an isize on 32-bit systems.