2af445cfc2
Dating the changelog and bumping both version strings is the cheap half. The README is the half that gets frozen into the sdist, so it is fixed first: the install pin now names 1.2.1 (1.2.0 has no tenant dimension), and the per-source FIELD table finally lists MISSING_DONE and EXTRA_BODY - the latter was already referenced elsewhere in the same file. The same table was missing QUOTA_FULL, the embedding-only keys, the memory cache backend and three optional PGW_* keys; all are reconciled against _SOURCE_FIELDS and _load_pgw rather than from memory.