Fix dependency ranking algorithm.#88

### v1.5.0 Fix dependency ranking algorithm. Fix the definition of dependency priority to provide faster macro compilation. This fix requires migration of the dependency priorities. Before ```scala @Inject(Default) ``` After ```scala @Inject[Default] ``` Dependency priority has been changed from a constant to a characteristic, so that it is no longer necessary to immediately evaluate and rank the priorities during macro expansion, and the ranking is now done based on the relationship between the priority characteristics. With this fix, benchmarking per injection with explicit priorities can be done in about 1ms instead of 300~500ms, cutting build time by up to 60%!