* Add filename param to attach_inline_image
* Add attach_inline_image_file function
(parallels EmailMessage.attach and attach_file)
* Use `Content-Disposition: inline` to decide
whether an attachment should be handled inline
(whether or not it's an image, and whether or not
it has a Content-ID)
* Stop conflating filename and Content-ID, for
ESPs that allow both. (Solves problem where
Google Inbox was displaying inline images
as attachments when sent through SendGrid.)
Interpret dates and naive datetimes as Django's
current_timezone (rather than UTC like Djrill did).
This should be more likely to behave as expected
when running with a non-UTC TIME_ZONE setting.
(Prep for installing backends as package extras)
* Extract AnymailRequestsBackend and RequestsPayload
to base_requests.py
* Don't define/require requests exceptions when requests
not available
For MANDRILL_API_KEY (e.g.,), look for these settings:
* ANYMAIL = { 'MANDRILL_API_KEY': '...' }
* ANYMAIL_MANDRILL_API_KEY = "..."
* MANDRILL_API_KEY = "..."
(the "bare" third version is used only for settings that
might be reasonably shared with other apps, like api keys)
Webhook tests define a local signal receiver function,
so connect it using the `weak=False` option to set
a good example.
(This isn't technically needed in the tests: the test receivers
are only connected while their definitions are still in scope,
so they couldn't possibly be garbage collected. But it doesn't
hurt, and it's good practice in case the test code gets copied.)
Also update the webhook docs to have a direct link to
Django's "listening to signals" info.
2.0.0-dev0 --> 2.0.0.dev0 (or just 2.0.dev0)
We still practice semver in the major.minor.patch
versions; we just don't use semver's "-" for
pre-release versions. (Because, PEP 0440.)
https://www.python.org/dev/peps/pep-0440/
