This release implements the fast multipole method (FMM) for linear scaling electric field computations in CPPE (using fmmgen https://github.com/rpep/fmmgen).
Minor bugs were fixed as well, and the some convenience functions were added (EEF, etc.).

• massive speed-up for induced moments computation (4-5x) through auto-generated T tensors (@peter-reinholdt)
• PeOptions is now retired from Python, a simple dict can be used instead
• expansion of the test suite (using polarizationsolver as reference for fields and tensors)

• expose static electric fields and exclusion lists to Python
• removal of pelib from build system and source code
• improved specification of Python executable for CMake

New feature: Thole exponential damping