Bump version from 0.4.0 to 0.5.0

replaced py14 test target with py13

gensim installation bug blocks testing tmplot in py14

docs: fixed minor issues

fixed errors in saliency calculation method

Update python-publish.yml

Update python-publish.yml

updated rtd config file

Update python-publish.yml

entropy method added to docs

t-SNE parameters optimized for topics scatter plot (closes #6), minor…

… fixes and changes