Update version to 0.2.0 and prepare for release

[aerorahul]

Description
Prepare for release 0.2.0

Type of change

• New release

How Has This Been Tested?

• pynorms
• pytests

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes need updates to the documentation. I have made corresponding changes to the documentation
• My changes generate no new warnings
• New and existing tests pass with my changes
• Any dependent changes have been merged and published

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.23%. Comparing base (f6938c7) to head (a37274a).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop      #34   +/-   ##
========================================
  Coverage    48.23%   48.23%           
========================================
  Files           18       18           
  Lines         1644     1644           
  Branches       335      335           
========================================
  Hits           793      793           
  Misses         791      791           
  Partials        60       60           

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