Check Asana task 6

- add 'colorscale' to all 2d trace objects (leave 'scl' as artifact )https://app.asana.com/0/7838292824434/14477880045212/f
- add 'reversescale' to all 2d trace objects (leave 'reverscl' as artifact)
- add 'cauto', 'cmin', 'cmax' in Marker (to fine-tune Scatter color maps)
- set 'orientation' to 'plot_info' https://app.asana.com/0/7838292824434/14477880045190/f
- set 'nticks' and 'tick0' to 'styple https://app.asana.com/0/7838292824434/14477880045202/f