Allow tuple as input of query parameters. (#1426)

Allow tuple as input of query parameters. (#1426)

* Allow tuple as input of query parameters.

In the documentation it is stated that params can be dict, string or two
tuples. This allows to used two tuples. Previously it was possible to
use only tuple inside a list.

* tests for two tuples

* use isinstance to check the type of query params

* change list|tuple to in Sequence

* update documentation

* fix typing