fixed bad GetManagedObject calls in CLR-based descriptor implementations

property descriptor made visible on the reflected class for instance …

…properties

prevent crash during debugging when attempting to inspect PyObject wi…

…thout GIL

when converting to Python, always use actual value type

updated assembly info

Release v2.5.0

don't remove outer exception from Iterator.__next__

fixed MappingMixin implementation (untested)

do not allow encoders for System.String

fixed PyObject.As<object> returning PyObject