Added release-drafter.yml

[daavoo]

Close #111

[codecov-commenter]

Codecov Report

Merging #158 (f23ad5a) into master (9192b6e) will not change coverage.
The diff coverage is n/a.

❗ Current head f23ad5a differs from pull request most recent head e96c9f2. Consider uploading reports for the commit e96c9f2 to get more accurate results

@@           Coverage Diff           @@
##           master     #158   +/-   ##
=======================================
  Coverage   91.66%   91.66%           
=======================================
  Files          15       15           
  Lines         360      360           
=======================================
  Hits          330      330           
  Misses         30       30           

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