static_vector is not noexcept

[Domagoj Šarić]

Resizing operations on static_vector completely delegate to the corresponding generic vector functionality which throws bad_alloc when the allocator returns null/runs out of storage. This is a bug which defeats the idea of static_vector as a lightweight wrapper around std::array, I don't want EH code generated for static_vectors. Just like array asserts on out-of-bounds access, so should static_vector (i.e. trying to resize a fixed capacity container beyond its capacity is a programming error).