Move concrete type retrieval to common location (ReflectionHelper).
Wrap call to Assemblies.GetTypes to report LoaderExceptions.
Changes to retrieval of ConcreteTypes require scanned types to be public.
Continues processing assembly's types even if one load fails.
Modified the code to be more straight forward.
Merge pull request #9 from KarsonAlford/TypeLoadingRefactor

Type loading refactor -- okie doke.  looks good to me.