v6.13.0

Add Tanya Yomi calendar

Perpetual Chabad daily Tanya schedule (19 Kislev through 18 Kislev),
keyed by Hebrew month and day with separate leap and regular divisions
chosen by the year the cycle began. The table is built from a crawl of
Sefaria's Tanya Yomi calendar (Sep 2023 - Dec 2027) by tools/tanya-yomi/,
and the test suite checks every crawled day against it.

Full Changelog: v6.12.2...v6.13.0