• Reply as Alias now also detects your alias from mail delivery headers
(X-Original-To, Delivered-To, Envelope-To), so replies use the right
alias even when it doesn't appear in To/CC — e.g. for BCC'd mail or
mailing lists. Detected addresses must still match the account's
configured alias method. Thanks to the feedback in issue #1!
• Fixed recipient matching with multiple To/CC recipients: addresses are
now parsed properly instead of matched against the raw header string.
• Clearer settings: the three features are now named Reply as Alias,
Alias Suggestion, and Identity Creation (existing settings are migrated
automatically), column headers have explanatory tooltips, and an
account's remaining options collapse while Reply as Alias is disabled
for it.
• Added a privacy policy and declared in the manifest that the extension
collects no data.

replace innerHTML with DOM construction (ATN review of 1.0.6)

fixed: missing html file (popup/identity-prompt.html)