Are there any restrictions on the implementation of parts of the ISO C ++ standard (or its proposals)?

I wrote an implementation of the ISO C ++ proposal for array_view

which could turn it into a future revision of the standard (C ++ 17?). The implementation is all my own work, but reflects the proposal very strongly by design, and for example includes almost a direct copy of the class interfaces, and this is not my own work. It is available at open-std.org as N4512 .

Before posting my implementation to GitHub - just an acknowledgment that I'm using to work with someone else makes me want to check out. Obviously there are both commercial and open source versions available, but they might know which I don't know. Can I publish my version to GitHub under my (permissive) license?