Merge branch 'json-view/19-edit-set' into json-view/21-images

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

.github/labeler.yml

@@ -51,6 +51,7 @@ labels:
     - "include/nlohmann/detail/view/.*"
     - "single_include/nlohmann/json_view\\.hpp"
     - "tests/src/unit-json_view.*"
+    - "tests/src/json_view_test_helpers\\.hpp"
     - "tests/src/fuzzer-(parse_json_view|json_view_image)\\.cpp"
     - "tools/amalgamate/config_json_view\\.json"
     - "docs/mkdocs/docs/features/json_view\\.md"