What's Changed
* [BUG] Fixing typing in helpers function by jamesETsmith in https://github.com/qognitive/fast-pauli/pull/86
* Deep copy for all fast-pauli objects; new properties for SPO by stand-by in https://github.com/qognitive/fast-pauli/pull/87
**Full Changelog**: https://github.com/qognitive/fast-pauli/compare/v0.0.30...v0.0.31