Community Bonding Period (Week 2)

This week mentor suggested me to go through the existing colormap code in Matplotlib. New classes for 2D Colormaps will also be developed on similar lines and in some case will inherit from them.

• Went through cm.py, colors.py. Trying to understand how 1D normalizations works, how user data is mapped to a colormap etc
• Halfway through colorbar.py
• Converted colorbar_only example in matplotlib gallery into a tutorial #8600
• Fixed an issue by adding test for _num_to_string method used in __call__ of LogFormatter #8598
• Removed resolution kwarg from PolarAxes #8643
• Debugged failing tests because of segmentation fault in Qt backend