Touch up bunch; work on Poisson solver; add cython functions for grid computations.
Looks like working particle distribution in grid_functions.pyx.
Add compute_potential_fgreenm2m.pyx.
Remove green_m2m_old.pyx.
Implement density computation using histogram.
Extend beam module by base and new derived classes.
Work on bunch.py e-cloud implementation and add some minor cosmetics.
Add scatter to grid_functions.pyx and implement pusher in solvers.
Record intermediate status in implementation of poisson solver; runnign example, poisson structure implemented via injection.
Add fields calculation to Poisson solver.
Add some suggestions for an improved structure.
Merge branch 'HBartosik' of https://github.com/like2000/PyHeadTail into kli
Successfully benchmark Poisson solver.
Revised longitudinal tracking: integrated the libintegr.py integrator suite into longitudinal tracking.
It has been benchmarked against the former 3 integration mechanisms (exactly the same numbers are obtained!).
Alongside with a few precision improvements in various parts, the libTPSA library has been provided (needed since libintegr.py supports checking integration mechanisms for symplecticity).
Add p2m in compute_potential.pyx
Try to finalize cloud; not working for now.
Bugfix in scatter_to. Further test cloud tracking.
First version looks-like running e-cloud.
intermediate status while updating longitudinal tracking for acceleration
Add new beams class/interface. Prepare space charge module.