Enable 32 bit plugins Please :)

[bdyetton]

Thanks for this SDK and Plugin, its very useful!
I'm using vampy-host, which calls this library.
I have both 32 bit Vamp Plugins in "Programs Files (x86)" and 64 bit plugins "Program Files", but when i run vamp.list_plugins() I can only see the 64 bit ones.
There are no issues loading both with sonic visualizer.
I'm using python 3.7 on windows 10, and installed this via pip install vampy-host
This issue is also logged here: https://github.com/c4dm/vampy-host/issues/6 but i think its probably caused by the C++ SDk rather than the python host.