Datasette-insert

- Now serves CORS headers if Datasette is started with the `--cors` option. [17](https://github.com/simonw/datasette-insert/issues/17)

- New `/-/upsert/db/table?pk=id` API endpoint for performing upserts, where partial JSON documents can be provided and those keys will be updated on existing row or used to create new rows if a matching row does not exist. [9](https://github.com/simonw/datasette-insert/issues/9)

- Locked down by default. This plugin no longer defaults to allowing all, reducing the risk that someone may deploy it insecurely. 15

Renamed this plugin `datasette-insert`

The user-facing consequences of this are:

* The plugin configuration block is now called `"datasette-insert"` (it was previously called `"datasette-insert-api")
* The permissions that used to be called `insert-api:all`, `insert-api:insert-update`, `insert-api:create-table` and `insert-api:alter-table` are now called `insert:all`, `insert:insert-update`, `insert:create-table` and `insert:alter-table`

- More finely grained plugin permissions: `insert-api:all`, `insert-api:insert-update`, `insert-api:create-table`, `insert-api:alter-table`. 8

- Implement basic "allow" permissions. 4
- Support inserts of a single record in addition to lists. 6