These can be moved into the RegisterColumn constructor, which avoids potential allocations in the case a std::function would otherwise need to allocate to hold all of it's captured data. Also tidy up the inclusion order while we're at it.
These can be moved into the RegisterColumn constructor, which avoids potential allocations in the case a std::function would otherwise need to allocate to hold all of it's captured data. Also tidy up the inclusion order while we're at it.