Author: Mike Owen
Revision Date: 2013-02-19 00:29:18 UTC

I've had to make our extended container interfaces optional for the
pybindgen unit tests to pass, since some of the tests (like in foomodule)
misuse container names, like wrapping a std::vector using the list
interface. To be conservative and not potentially break any backward
compatible cases like this, I've made the newer expanded interface
optional. In the future maybe this should be changed?