Simplifying main data structure
Merge branch 'master' of github.com:UCL/LatBo.jl

* 'master' of github.com:UCL/LatBo.jl:
  sticking to single color 3d scatter added tri-surf plot
  Added export to LatBo
  Float to Int for celerities
  No slip boundary
  attempt to use PyPlot for 3d scatter
  git screw up
working on main loop
Adding main loop with all but bounce back