[XML-SIG] gray areas in Python SAX API

[Lars Marius Garshol]

* Martin v. Loewis
| 
| Of course, it may be necessary to come up with an API that finds a
| parser given a set of required features and properties (similar to
| what the Python DOM offers).

This is a much-wanted feature. It basically just waits for someone to
sit down and make an implementation.
 
--Lars M.