connector: Improved docs. Made a few attributes as properties and fixed a bug in set_logic_all method of Bus
linker: Linker now wraps all objects ( connectors, list of connectors ) around Bus containers before adding to graph
clock: Removed lock ( trial run - will re establish locks if found absolutely necessary )Made name, time_period, frequency and state as properties
Improved docs
buffers: docfix and minor changes
converters: minor fixes
Minor changes in analog tests