Specifically,
(1) We now benchmark with fusion::list too
(2) We now document our methodology for forcing the evaluation of algorithms
Note that we still use `as_list` and `as_vector` to force the evaluation
of algorithms instead of using e.g. `for_each`. This is because we want
to compare apples with apples, and for this we need to get a sequence of
computed values, not only for_each over the view. The disclaimer in the
tutorial saying "Fusion might encourage a different design" takes care
of warning people about the fact that we're not necessarily using
idiomatic Fusion, but not need to benchmark unfairly to try to
account for that.
- Allow specializing models_impl with a forward declaration only
- Modularize remaining concept headers
- Include <boost/hana.hpp> in unit tests to ease the transition
- Add the core/dispatch.hpp header to reduce the number of boilerplate includes
