Fixed library discovery on Windows

[KOLANICH]

When gsdll.dll is not found in the usual place in the Windows registry, ctypes.util.find_library() is used as a fallback to search %PATH%, before raising RuntimeError.

[codecov-io]

Codecov Report

Merging #32 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #32   +/-   ##
=======================================
  Coverage   87.69%   87.69%           
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  Files          13       13           
  Lines        1511     1511           
  Branches      349      349           
=======================================
  Hits         1325     1325           
  Misses        129      129           
  Partials       57       57

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[KOLANICH]

@vinayak-mehta

[vinayak-mehta]

Please give me some time to check this out. 👍

[dimitern]

Thank you! It would've been nice to be able to run CI tests on Windows, so there can be a unit test for this, but until we do, I think we should merge your fix.

[KOLANICH]

It would've been nice to be able to run CI tests on Windows

I wonder if Wine is a suitable substitute....

[vinayak-mehta]

@KOLANICH Thanks for the PR! @dimitern Thanks for the merge!