Add "auto" option to --yMin and --yMax of plotHeatmap

[dariober]

In options --yMin and --yMax of plotHeatmap would you consider adding an "auto" option that scales each plot inidividually to its minimum and maximum, respectively? For example, in the plots below --yMax auto would set the maximum of the y-axes to, more or less, 5, 8, and 10.

deeptools --version
deeptools 3.5.0
python --version
Python 3.7.6

[LeilyR]

For now you could give those numebrs all to yMax. It is possible to provide yMin and yMax with mutliple values