Feature Request: skipcols in .read_csv
I'd like to read a set of csv files but exclude specific columns. `read_csv` currently has a `usecols` keyword, but it requires writing a list of all the columns present.  This is a bit tedious and more importantly, not all files have the same columns, so `usecols` would not work in general cases, whereas a complimentary function would work.  Can a `skipcols` keyword be added to 0.17 that accepts a list of column names and reads all but those columns into a DataFrame?  Thanks.

xref #4749
xref #8985
xref #6710
