classes should be converted to readable strings when printed

[master0v]

Is your feature request related to a problem? Please describe.
difficult to debug because botbuilder classes are not python-friendly

Describe the solution you'd like
it is common practice in python to display the class members when print(class) is called

botbuilder classes do not provide that, instead they display object location like so
<botbuilder.core.turn_context.TurnContext object at 0x7fd282af7160>

this is not very useful, and should be improved to list all the class members and their values (by defining a __str__ or __repr__ function to display the data for an instance in an intelligible way)