v0.9.1 (oops)

Changed:

• Tweaked TopicModel class to work with newer versions of scikit-learn, and updated version requirements accordingly from >=0.18.0,<0.21.0 to >=0.19

Fixed:

• Fixed residual bugs in the script for training language identification pipelines, then trained and released one using scikit-learn==0.19 to prevent errors for users on that version