PWGPP-532, PWGPP-540, PWGPP-524 - New release 0.0.08 with logging

PWGPP-532, PWGPP-540, PWGPP-524 - New release 0.0.08 with logging

• Using logging instead of the print
• adding nbval dependency to enable automatic tests of JUPYTER notebooks
• in bokehDraw - using default options using dictionary instead of coding
  • inspired by https://stackoverflow.com/questions/1098549/proper-way-to-use-kwargs-in-python

def testFunc( **kwargs ):
    options = {
            'option1' : 'default_value1',
            'option2' : 'default_value2',
            'option3' : 'default_value3', }
     options.update(kwargs)