- Don't upgrade already-redirected requests from HTTP to HTTPS to avoid redirect loops.

- Don't redirect from HTTP to HTTPS if the user attempts to navigate to the same URL before the previous URL has received a response - https://github.com/Rob--W/https-by-default/issues/20
- Add a checkbox at the options page to enable logging redirects to the console (off by default).

Do not redirect from http: to https: if the requested URL seems to be based on the tab's URL - https://github.com/Rob--W/https-by-default/issues/16

Default to https: for direct navigations from the focuses new tab page.

Only redirect to HTTPS in existing tabs, and not for very new tabs.

Now Alt-Enter navigations will no longer default to HTTPS.
This is a trade-off to avoid redirecting tabs of unknown origin, such as request originating outside of Firefox or tabs created by other extensions.

Bugfix for 0.4 (WebExtensions); Don't redirect to HTTPS when the request is not likely a result of an explicit navigation from a typed URL:

- Do not redirect to HTTPS upon resuming a discarded tab.
- Do not redirect to HTTPS upon page reload

NOTE: If the site does not support HTTPS, edit the URL and change "https" to "http" again to navigate to http. Or add the domain to the exception list at the add-on settings page.

WebExtensions version.

New:

- Do not use HTTPS by default for dotless domains (e.g. localhost), IP addresses and reserved top-level domains (RFC 2606).

- HTTPS by default can be disabled for specific domains at the add-on's preference page.

- HTTPS by default is enforced for all non-web-triggered navigations (i.e. navigations initiated from the address bar and bookmarks), even if you explicitly added "http:" in front of the URL. If the site does not support HTTPS, edit the URL and change "https" to "http" again to navigate to http. Or add the domain to the exception list at the add-on settings page.