* [breaking] Replaced the site-specific customization key `bs_title_selector` with the new CSS selector key named `selector`. Note that the `.text` attribute is used with the new key.
* Fallback to `og:title` property if `title` tag is unavailable. This however required increasing the default request size from 8 KiB to 16 KiB to continue to prefer the `title` tag over the `og:title` property given a partial page read.
* Allowed customizing the default request size for a site. This is necessary when the `og:title` property is unintentionally matched instead of the `title` tag.
* Updated the default user agent from Firefox 77 to Firefox 79.
* Updated minimum versions of various package requirements.
* Fixed custom support for `amazon.com`, `swansonvitamins.com`, and `iospress.nl`.