Viz Function parameter requests

[ChristinaSchmidt1]

Due to feedback from users over the past month there are a couple of points that came up multiple times:

• Enable Heatmap colour choices for the heatmap itself and for the labels
• Enable other parameter inputs from pheatmap such as cutree, drop_levels, etc.
• Volcano plot: Check the thresholds (Vignette is Log2FC 0.05)
• Time-series data --> lollipop graphs would be needed for this