We want to change these terms so they can be used to hold datetime values, not just dates.
[x] Change term name to TemporalCoverage.startDatetime, TemporalCoverage.endDateTime
[x] Add a note along the lines of 'Datetime format conforming to https://www.w3.org/TR/NOTE-datetime format' into the notes field for each term - they're currently in 'constraints' but I don't think that pulls through to the tdwg termlist fields.
[x] Add datetime examples, including ones with unknown times
See meeting notes: 2nd March 23 and related discussion around PersonRole detailed on 23rd Feb 23 Original defs: https://github.com/tdwg/cd/issues/68, https://github.com/tdwg/cd/issues/69 Master defs: https://github.com/tdwg/cd/blob/review/standard/terms/ltc_standard_terms_draft.csv#L236
We want to change these terms so they can be used to hold datetime values, not just dates.