Datasette-graphql

- Fix for forthcoming change to Datasette undocumented internal method. 66
- Now tested against Python 3.9

- Plugin now respects the `view-instance` and `view-database` permissions. Previously the plugin could expose schema details of databases that should not be visible, though not their actual row content. See security advisory: [datasette-graphql leaks details of the schema of private database files ](https://github.com/simonw/datasette-graphql/security/advisories/GHSA-74hv-qjjq-h7g5). #65
- Adds links to the GraphQL API in the database and table action menus, including example table queries. 63
- Running the plugin against Datasette with no attached databases no longer returns a 500 error. 64

- Adds "GraphQL API" link to Datasette's new navigation menu, added in Datasette 0.51. 62

- Documentation improvements: [README](https://github.com/simonw/datasette-graphql/blob/main/README.md) now links to example queries in the live demo. #60

- Added GraphQL execution limits, controlled by the `time_limit_ms` and `num_queries_limit` plugin configuration settings. These default to 1000ms total execution time and 100 total SQL queries per GraphQL execution. [Limits documentation](https://github.com/simonw/datasette-graphql/blob/main/README.md#execution-limits). 33

- Support for multiple reverse foreign key relationships on a single table. [Example](https://github.com/simonw/datasette-graphql/blob/main/examples/related_multiple.md). #32
- The `graphql()` template function now accepts an optional `variables=` parameter. 54
- The `search:` argument is now available for tables that are configured using Datasette's [fts_table mechanism](https://docs.datasette.io/en/stable/full_text_search.html#configuring-full-text-search-for-a-table-or-view). 56
- New example [demonstrating GraphQL fragments](https://github.com/simonw/datasette-graphql/blob/main/examples/fragments.md). #57