Add 'deco' library

Created by: rajaravivarma-r

• 'deco' library makes parallelizing easy by giving us decorators which encapsulates multiprocessing standard library.

What is this Python project?

A simplified parallel computing model for Python. DECO automatically parallelizes Python programs, and requires minimal modifications to existing serial programs.

What's the difference between this Python project and similar ones?

It is similar to Tomorrow, but has the following differences.

1. Deco supports Python3, whereas Tomorrow supports only up till Python 2.7
2. Deco by default uses the Python's multiprocessing library, whereas Tomorrow uses threads --

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