Revert "Use placement new to avoid unique_ptr allocations"
Revert "Use placement new to avoid unique_ptr allocations"

This reverts commit 83281bff52a4ceb7a2a479a42efd5795c54924ac.

bradparks/ChaiScript__cplusplus_scripting_language,bradparks/ChaiScript__cplusplus_scripting_language,bradparks/ChaiScript__cplusplus_scripting_language