Now all classes and members are either exposed to bindings or marked
as "not available in Python bindings" in the docs.
Drop test thresholds to 0. Now it should be much easier to determine
what missing members have been added which are causing test
failures.
* make sip coverage test aware that there are less classes where QSci sip
headers are not available
* exclude properties from members
* fix QgsFeatureIds typedef (fixes missing signal
QgsVectorLayer.featuresDeleted and others)
* add missing notes for PyNames
* include some missing new methods in bindings
