Description
Boost is used as the default polyfill when compiling with MSVC, due to various issues compiling MNMLSTC with MSVC.
When a version of MNMLSTC compatible with MSVC 2015 is available, we should change the default polyfill to MNMLSTC on all system configurations. MNMLSTC is far easier to install and configure than Boost, so this will be a win for Windows users who don't care about which polyfill source they get.