pothos-library: managed class supports base class
pothos-library: added complex integer dtypes
pothos-blocks: factory simplifications for complex integer dtypes
pothos-library: make use of register base class to fix #37
Merge branch 'base_class_support'
Merge branch 'master' into connectable_work
pothos-library: topology elements inherit from connectable
pothos-library: input and output port names for topology