Element-coder

What's Changed
* chore: alias for electronegativity and fixed logger message by kjappelbaum in https://github.com/kjappelbaum/element-coder/pull/20
* chore: update logging by kjappelbaum in https://github.com/kjappelbaum/element-coder/pull/23


**Full Changelog**: https://github.com/kjappelbaum/element-coder/compare/v0.0.6...v0.0.8

This is only a release to fix the discrepancy between the versions on PyPi and GitHub

**Full Changelog**: https://github.com/kjappelbaum/element-coder/compare/v0.0.6...v0.0.7

dropped sciris dependency

New features

- implements `encode_many` and `decode_many`

New features
- implements most properties from `pymatgen` (1)

- fixes the treatment of isotopes 5