Change from LGPL-3.0 to more permissive Apache-2.0 license.
What's Changed
* Simple molecular properties by marvinfriede in https://github.com/tad-mctc/tad-mctc/pull/29
* Change License to Apache-2.0 by marvinfriede in https://github.com/tad-mctc/tad-mctc/pull/28
**Full Changelog**: https://github.com/tad-mctc/tad-mctc/compare/v0.0.6...v0.1.0