C++ Interface to Truncated Power Series Algebra module interface

This code base is providing a shallow c++ wrapper to the truncatad power series algebra module as provided in mad-ng https://github.com/MethodicalAcceleratorDesign/MAD. For details see https://github.com/MethodicalAcceleratorDesign/MAD/blob/dev/src/libgtpsa/README.GTPSA.

NB: the code base builds gtpsa as a library.

The wrapper covers a good fraction of what the gtpsa library provides.

If interested, you are welcome to join.

For installation instructions see install.rst