2020.0.1

• added type axes=11 (horizontal grid)
• fix bug by @m-albert on Volume from numpy object
• fix typos in docs
• change old fashioned list(zip()) to np.stack()
• change [0]*len(z) to np.zeros_like(z)
• add testing directory with circleCI
• examples and package are now split into two separate repos
• added possibility to run any example from CLI
  vtkplotter --run shrink.py
  or list them all with
  vtkplotter --list
• reshuffled methods by splitting actors.py module
• general improvements and stability
• some methods are now deprecated: getPoints becomes points() etc.
• Actor() becomes Mesh()
• added advanced/centerline.py examples