Make `in_channels` and `out_channels` sets instead of arrays.

[abinashmeher999]

The member variables in_channels and out_channels in Process class don't need any ordered iteration. They can very well be turned into sets. The addition and deletion will be efficient then.

Expected Behavior

in_channels and out_channels are of type set.

Current Behavior

They are lists.

Possible Solution

Refactor the code

Your Environment

• Version of the package used: master
• Python version (Interpreter too if relevant): Python 3.5.3
• Operating System and version: Ubuntu 14.04

[abinashmeher999]

@ayuhsya Want to give it a try?

[ayuhsya]

@abinashmeher999 I couldn't find any usages of in_channels and out_channels. How do I test it?

[abinashmeher999]

Currently I am testing through echo_algorithm.py. Ensure that it terminates and the process id and the message content on the last line to get printed are the same.