Revert "Release the GIL"
Revert "Release the GIL"

This reverts commit 7ec9a6c677cd346afd3b75fe8022f51e4e076809.

QuantConnect/pythonnet,pythonnet/pythonnet,pythonnet/pythonnet,AlexCatarino/pythonnet,AlexCatarino/pythonnet,QuantConnect/pythonnet,AlexCatarino/pythonnet,QuantConnect/pythonnet,AlexCatarino/pythonnet,pythonnet/pythonnet