Fix duplicate `MIME-Version` header bug resulting in unsent emails
Fixes a bug where using StCR with SMTP plugins, like WP-Mail-SMTP, results in a quiet duplicate header error. `wp_mail()` already takes care of setting the `MIME-Version` header so this doesn't need to be done again.
Partial fix for broken Subscribe to Replies Only feature
* See comments on L775
Add new [comment_reply_permalink] tag for messages
* Allows you to show a link directly to the comment reply form for given comment so that replies are kept nested as expected.
Add new option for BCCing the admin on all Notifications
Add paragraph tags to comment content when HTML emails enabled
Add new option to automatically HTMLify links in messages
Add admin notices and new import routine for WP Comment Subscriptions
* New Import Routine for WP Comment Subscriptions plugin; StCR will detect WP Comment Subscriptions data and options and import those if no existing StCR subscription data exists.
* New admin notices to improve messaging
Update readme.txt changelog and version number
Fix bugs and refactor import routines
* Fix bug in WP Comment Subscriptions import routine
* Move Subscribe to Comments import routine to _import_stc_data()
Admin BCC Option: Set default option value on activation and delete option on uninstall
Add settings link to plugin on plugins page.
Delete version and admin notices options on deactvate() instead of uninstall
Improve import messaging to only recommend deactivating other plugins when they're actually active
Remove unnecessary author line; fix grammar mistake
Add paragraph CSS class to default checkbox HTML