Refs #28584 -- Documented removal of support for SQLite < 3.7.15.

docs/ref/databases.txt

@@ -627,6 +627,8 @@ appropriate typecasting.
 SQLite notes
 ============
 
+Django supports SQLite 3.7.15 and later.
+
 SQLite_ provides an excellent development alternative for applications that
 are predominantly read-only or require a smaller installation footprint. As
 with all database servers, though, there are some differences that are

docs/releases/2.1.txt

@@ -340,6 +340,8 @@ Miscellaneous
 * The minimum supported version of ``mysqlclient`` is increased from 1.3.3 to
   1.3.7.
 
+* Support for SQLite < 3.7.15 is removed.
+
 * The date format of ``Set-Cookie``'s ``Expires`` directive is changed to
   follow :rfc:`7231#section-7.1.1.1` instead of Netscape's cookie standard.
   Hyphens present in dates like ``Tue, 25-Dec-2018 22:26:13 GMT`` are removed.