util.jsonschema: Implement 'dependentRequired' If this field exists, then these fields must also exist.

util.roles: Implement a serialization preparation metamethod Should be able to roundtrip trough serialization. Also nice for debug and logging purposes where you might want more details than what the __tostring method provides.

util.set: Add a serialization preparation metamethod Enables util.serialization to turn Sets into a representation that can be deserialized with an environment trick, i.e. `set{"a","b"}`. Also useful for debug purposes.

util.format: Update tests for serialization changes

util.format: Restore "freeze" serialization behavior in logging This was implied with the "debug" preset and does nice things like turn util.set objects into "set{a,b,c}" instead of the quite verbose thing you get otherwise.

util.format: Tweak serialization of %q formatted entries Improves serialization of function references especially, the built-in default handling of that in util.serialization is not the most informative. Now, along with the function metatable from util.startup, the actual function can be found by filename and line number.

util.startup: Tweak function string representation Mostly in order to avoid triggering the XML syntax highlighting in the console logger.

mod_server_contact_info: Reorder dataform keys for more aligned view

mod_tokenauth: Track last access time (last time a token was used)

teal: Move into prosody namespace