• Added Interface objects for storing complicated sets of I/O signals for subsystems.
• ERC no longer redundantly checks every segment of a multi-segment net and reports multiple errors.
• copy() function of Part, Bus, Pin, Net objects now returns a scalar object while copy(1) returns a list with one object.
• Bus, Pin, and Net objects now have iterators.
• Corrected initialization of KiCad library search paths.