v3.1.3

Essentially more fixes.

• Query getitem slices now work
• Video titles that comes from a query do not trigger a video refresh
• Updated exemples
• Query length is now cached since query should be """"immutable""""
• Queries support negative numbers (like lists, the last element will be taken)
• Client.loggin now raises LogginFailed error when credentials are wrong
• Query (should) now have a reliable video counter regex