* ENHANCEMENT: Updating `<h3>` tags to `<h2>` tags for better accessibility.
* BUG FIX/ENHANCEMENT: Improved compatibility with PMPro Multiple Memberships Per User Add On.
* BUG FIX/ENHANCEMENT: Updated localization and escaping of strings.
* BUG FIX: Fixes PHP error that gets thrown on archive pages.
* REFACTOR: No longer pulling level from `$_REQUEST` variable.
* BUG FIX: Fixed display of invite codes in emails.
* BUG FIX: When a user was assigned multiple invite codes, they were not displayed in the email body (array output as string). (Thanks, Matt Sims)
* ENHANCEMENT: Added the display name of the original recipient of a used invite code on the user profile screen. (Thanks, Matt Sims)
