pothos-library: work on topology element interface
Merge branch 'master' into connectable_work
pothos-library: topology elements inherit from connectable
pothos-library: input and output port names for topology
pothos-library: getConnectable call to fix dis/connect
pothos-blocks: update unit test for subtopology
pothos-library: port names have no duplicates
Merge branch 'connectable_work'