Note lazy SQLite cache file creation in the unreleased changelog

Author: anatoly-scherbakov

CHANGELOG.md

@@ -6,6 +6,9 @@
 - `*Options` TypedDict types and a `Context` type alias in `pyld.options` for JSON-LD API option dicts (typing and documentation).
 - `pyld.SqliteCacheRequestsDocumentLoader`: a SQLite-backed HTTP cache document loader using `requests-cache`.
 
+### Changed
+- `SqliteCacheRequestsDocumentLoader` creates the SQLite cache file on first document load, not at construction time.
+
 ### Fixed
 - If value objects contain array values for `@type` during expansion, an error is now raised. Fixes [expand#ter54](https://w3c.github.io/json-ld-api/tests/expand-manifest.html#ter54) and [toRdf#ter54](https://w3c.github.io/json-ld-api/tests/toRdf-manifest.html#ter54).
 - Inline contexts that try to redefine @context now raise an error. Fixes [expand#ter56](https://w3c.github.io/json-ld-api/tests/expand-manifest.html#ter56) and [toRdf#ter56](https://w3c.github.io/json-ld-api/tests/toRdf-manifest.html#ter56).