Unimod-mapper

**Full Changelog**: https://github.com/computational-ms/unimod-mapper/compare/v0.6.7...v0.6.8

What's Changed
* Main back to dev by ArtiVlasov in https://github.com/computational-ms/unimod-mapper/pull/48
* Add function to read mapped mods as df by StSchulze in https://github.com/computational-ms/unimod-mapper/pull/49


**Full Changelog**: https://github.com/computational-ms/unimod-mapper/compare/v0.6.6...v0.6.7

What's Changed
* Moved import of ChemicalComposition to mao_mods function by StSchulze in https://github.com/computational-ms/unimod-mapper/pull/46
* dev into main by ArtiVlasov in https://github.com/computational-ms/unimod-mapper/pull/47


**Full Changelog**: https://github.com/computational-ms/unimod-mapper/compare/v0.6.5...v0.6.6

What's Changed
* Add ChemicalComposition import by MKoesters in https://github.com/computational-ms/unimod-mapper/pull/42
* Add new compositions_to_ functions by fu in https://github.com/computational-ms/unimod-mapper/pull/44


**Full Changelog**: https://github.com/computational-ms/unimod-mapper/compare/v0.6.4...v0.6.5