feat: datetimes and ranges

[sardination]

Ticket(s) Closed

• Closes Support for indexing DateTime types #365

What

Adds support for dates, timestamps, and time.
Adds support for range queries.
Fixed existing term bugs and added tests.

Why

Indexing and searching on time and date!
Searching for fields by range.

How

Add support via tantivy and time conversions.
Add support via tantivy range translation.

Tests

Added search and indexing tests for date, time, timestamps, and timezones (for time and timestamp).
Added range tests.

[neilyio]

Fantastic. This is an awesome feature. I'm not sure which of the advanced query builder functions is most appropriate to use with dates/times... but could you:

• find that out
• add a test for it
• add it to the docs

Users are relying more and more on the advanced query interface, so I want to make sure that dates are working correctly there.

[neilyio]

Do you plan to also support TIMESTAMPZ?

[sardination]

Do you plan to also support TIMESTAMPZ?

Ooh yes, thanks for catching!

[neilyio]

It looks like you use and_utc and to_utc to convert the timezone to UTC as Tantivy expects it during insert/query. That sounds correct. Does anything need to be done with the retrieved value in a query to ensure correct timezone?