Moera naming 0.5.0 @ Moera²

Dependency upgrades.
Removed deprecated APIs.
Added name creation time to the output of getAll() call.
Added getAllKeys() call that returns the whole history of signing keys for the given name.
Added getAllNewer() call that returns the list of all names registered after the given moment.
Ability to disable creation of new names for all generations, except for the generations listed in the configuration of the naming server.