reset output of gates
reset output of gates
addInput, removeInput functions added
Tests added for logic gates
Merge pull request #237 from salil93/gates

Gates Class improved
Merge branch 'develop' of https://github.com/BinPy/BinPy into connector_re-implementation
Refactor names in ic/base.py
Refacoctor names in tests and 7400 and 4000 series IC classes
Refactor names in tools/
Modified __init__.py