added function create_annotated_heatmap_of_categorical_data to create…

[Tejas-Gosavi]

… annotated heatmap of categorical data from DateFrame and individual series objects

This is my first PR request, that's why i am little bit of nervous and afraid.

If there are any mistakes then tell me i will definately clear those mistakes.

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[nicolaskruchten]

Thanks for this PR! I'll try to find time to review it in the next couple of weeks :)

[nicolaskruchten]

OK, I'm finally reviewing this :)

Can you provide a bit of context around the need for this new factory? Is what you're trying to do not possible with any of the existing functions we have? I'm not sure about the use-case here...

[Tejas-Gosavi]

@nicolaskruchten first sorry for this late replay to you, by coming on main point what this function do is that when given two columns having unique values less than 20, it plots count of unique values of first column with respect to unique values of second column, it is little bit hard for me to explain to you but i have written an example in that factory file from line 43, plz check and run code with that example, i know you will definately understand from that, so plz run that code.

[gvwilson]

@Tejas-Gosavi thank you again for submitting this - I'm very sorry it's taken us so long to get to it, but we are no longer enhancing figure factory, so I'm going to close this one as stale. Best regards - @gvwilson