Fixes requirements to be installable, fixes CUDA Tests

[oke-aditya]

Our last step to #75
After this will release rc2

I have manually shifted model to CPU and we will do this for all CPU operations.
Sometimes while running GPU tests, it causes device mismatch and we can avoid that.

[codecov]

Codecov Report

Merging #88 (8c08c80) into master (d098527) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #88   +/-   ##
=======================================
  Coverage   78.05%   78.05%           
=======================================
  Files          49       49           
  Lines        1581     1581           
=======================================
  Hits         1234     1234           
  Misses        347      347           

Flag	Coverage Δ
unittests	78.05% <ø> (ø)

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