Nano-qmflows

New
* Automatically build and upload manylinux2014 wheels when creating a release.

New
* Allow for the use of basis sets consisting of multiple exponent sets.

Changed
* Bump the minimum QMFlows version to >= 0.12.0.
* Change the `basisFormat` hdf5 attribute from a string into an integer array.
* Move the `compute_integrals` extension module to `nanoqm.compute_integrals`.
* Move all `print` calls to the nanoqm logger.

Changed
* Do not hard code basis set names for compution of the HOMO index.
* Do not overwrite explicit `basis_set_file_name` and `potential_file_name` CP2K settings.
* Add the `basis_file_name` and `potential_file_name` options.
* Do not hard-code the `BASIS_MOLOPT` coefficients in the .hdf5 file.
* Always use the `-q` suffix when reading basis sets from .hdf5.
* Add settings for manual choice of XC functionals for GGA, MGGA and hybrids.
* Remove the upper version bound of noodles.
* Formally set the minimum python version to >= 3.7.

Changed
* Only distribute source files on pypi.

Fixed
* Fixed a number of pypi classifiers.

New
* Support Python 3.9 and 3.10
* Allow to compute the spectrum of multiple stack geometries (324)

Changed
* Check for duplicate keys when loading .yaml files.
* Make cell parameters optional.

Fixed
* Various fixes.