Change Log
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0.0.2 (January 12, 2023)
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- Second Release

Notes:
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Added a function called scatter_bygroup. This function creates a 2-D scatterplot on a matplotlib axis and colours the points by
a third variable. The user passes an axis object,  x,y,col arrays, and, if desired, a string representing a matplotlib colormap.
The default colormap is 'hot'.

