Using .H from csr_matrix had been deprecated and has now been removed in scipy 1.14. This changes NumPyEigensolver, to use an alternative (and works with the prior scipy). This also ends up fixing CI which has been failing in nightly builds recently.
Summary
Fixes #182
Scipy 1.14 compatibility fix
Details and comments
Using .H from csr_matrix had been deprecated and has now been removed in scipy 1.14. This changes NumPyEigensolver, to use an alternative (and works with the prior scipy). This also ends up fixing CI which has been failing in nightly builds recently.