Update README.

Update README.

Update tests.

Update/optimise parse stuff & add Traversable util.

Optimise tests.

Optimise tests.

Optimise tests.

UuidHelper: add isValidDate(),isValidTime().

DateUuid,DateTimeUuid: optimise parsers & use UuidHelper validators [validation issues].

DateUuid,DateTimeUuid: optimise getDateTime() [zone issues].

DateUuid,DateTimeUuid: make date(),datetime() public.