included new ic74138 and ic7445 using combinational.py
included new ic74138 and ic7445 using combinational.py

rajathkumarmp/BinPy,BinPy/BinPy,yashu-seth/BinPy,rajathkumarmp/BinPy,BinPy/BinPy,daj0ker/BinPy,yashu-seth/BinPy,daj0ker/BinPy