Bump up version in setup.py to 3.2.0

[karandeep-johar]

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@@            Coverage Diff            @@
##             master     #199   +/-   ##
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  Coverage          ?   51.73%           
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  Files             ?       37           
  Lines             ?     8367           
  Branches          ?     1786           
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  Hits              ?     4329           
  Misses            ?     3724           
  Partials          ?      314           

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