PyPIC Version 1.04

New Feature:

• Fast Polar Poisson Solver (FPPS) see: https://cds.cern.ch/record/2102532?ln=en

PyPIC Version 1.03

Add build_sparse_solver function to FiniteDifferences_ShortleyWeller_SquareGrid.py

Version 1.02

New feature: The FD Shortley-Weller PIC can handle non convex boundaries