Forgot to bump version number.
Merge branch 'hotfix/1.3.1'

* hotfix/1.3.1:
  Adding a 32bit build as well
  Fixing nullpointer access.
  Fixing startup crash on windows < 7 hopefully.
Adjusting tests.
Fixing issues #228, #229, #230, #231.
Updating version number and product id
Merging changes from hotfix branch.