Lowercase native constants fix. Fix for #366 point 3.
bug #367 Lowercase native constants fix. Fix for #366 point 3. (keradus)

This PR was squashed before being merged into the 0.5.x-dev branch (closes #367).

Discussion
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Lowercase native constants fix. Fix for #366 point 3.

Lowercase native constants fix for #366 point 3.

Commits
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83f345f Lowercase native constants fix. Fix for #366 point 3.