Improved CMake Integration

By providing greenXConfig.cmake and greenXTargets.cmake when installing the greenX library, the integration of GreenX into other projects via CMake is much simpler.

Additional Component for Pade Analytic Continuation

New Component: GX-AnalyticContinuation

• for analytic continuation using Padé rational functions
• Numerical stability of the Padé interpolation using a greedy algorithm and the GNU Multiple Precision library
• Symmetry constraints can be imposed onto the Padé model

GreenX v1.0

Minimax grids for:

• conventional and low-scaling RPA
• low-scaling GW
• Laplace-transformed direct MP2