Add a `sitka/api/client/options` filter for the Guzzle Client [constructor](https://github.com/sitecrafting/sitka-insights-wordpress/blob/main/sitka-insights.php#L49) options array. While we're at it, add a default timeout.
Add a
sitka/api/client/optionsfilter for the Guzzle Client constructor options array. While we're at it, add a default timeout.