extended operators of Global
tentative implementation of SubvolumeSpace
skip an unsuccessfull test for ode
changed the structure
added Shape.hpp, Sphere.hpp and Sphere.cpp
added a function add_molecules(Species, Shape) to LatticeWorld
debugged Shape_test
the first commit for meso
implemented Python wrappers for meso
implemented diffusions for meso
extended Python wrappers for lattice
extended APIs of MesoscopicWorld
appended common APIs for meso
included viz in util.__all__
log at the initial and last time
fixed a silly but critical bug
removed a line
debuged get_neighbor()
added some tests for LatticeSpace
Merge remote-tracking branch 'origin/develop' into off_lattice