Add string checks
Add string checks

Adds the following error codes:

Presence of implicit parameters
P101	format string does contain unindexed parameters
P102	docstring does contain unindexed parameters
P103	other string does contain unindexed parameters

Missing values in the parameters
P201	format call uses to large index (INDEX)
P202	format call uses missing keyword (KEYWORD)
P203	format call uses keyword arguments but no named entries
P204	format call uses variable arguments but no numbered entries
P205	format call uses implicit and explicit indexes together

Unused values in the parameters
P301	format call provides unused index (INDEX)
P302	format call provides unused keyword (KEYWORD)

S001	found modulo formatter

Q000	Remove bad quotes
Q001	Remove bad quotes from multiline string
Q002	Remove bad quotes from docstring

tvmaze/tvmaze