How to use the Yake "features" argument?

[m-janyell0w]

Hi there,

thanks for making the code for Yake! open source!

Right now, I am trying it out for a work project, so I was wondering what the features argument of the yake.KeywordExtractor does (which defaults to None).

From the code, I could not find out whats exactly the purpose of this argument?
I am wondering if it could affect the results of the keyword extraction, if one does not specify or does specify it.

Thank you :)