+- Start each package-level name that belongs to one feature or
+ integration with the name of that feature. Start the names of its
+ files with the same name. Keep a name generic only when more than one
+ feature uses it.
+- Write type names with a capital letter, so that a variable can have
+ the name of its type. Write all other package-level names in lower
+ case.
+- Write all the letters of an initialism in one case.