adding __pycache__ to gitignore
fixed bug in FindBestSubtitleMatches: sorting from highest to low

There was a bug in FindBestSubtitleMatches that would sort by download
count, resulting in it picking the *least* downloaded subtitle as best
match. Fixed by negating downloading count, making it sort from highest
to lowest, while also giving more weight to the subtitle that closest
matches the movie name.
bumped version number to 0.2