regretting that, but it should be safe.
… combinator is added to HttpRequestHandlerCombinators
…se MongoBijection, CountQueryBehaviour returns Long
rather than a type parameter. Side effecting Mongo queries now return Unit.
to use Map semigroup instead of Map plus.
the Plus instance. This is because the Plus instance should probably not have the same semantics as the semigroup instance, but should instead have semantics similar to Plus[Option]; i.e. orElse.