0.4.0
  - Added media query to emails for better display on mobile devices
  - Added callbacks as a way for main app to be notified of new posts,
    comments, or subscriptions. Configured in initializer
  - Fixed bug where email field didn't hide after successful comment
  - Added ability to administer subscriptions
  - Added page titles for each Proclaim page
  - Removed the use of calc from mailer layout

v 0.3.1
  - Fixed bug causing floated images to display improperly in emails
  - Added link to emails to view post online

v 0.3.0
  - Implemented sanitization for post body, using lists of allowed HTML tags and
    attributes that can be customized via initializer

v 0.2.4
  - Added simple format to comments, to preserve line breaks

v 0.2.3
  - Fixed inability to set "from" field in emails sent from Proclaim

v 0.2.2
  - Fixed post titles showing HTML entities
  - Fixed posts index to show published time instead of updated time

v 0.2.1
  - Fixed out-of-date initializer template

v 0.2.0
  - Added ability to alter the buttons shown on editor toolbar
  - Upgraded to Medium Editor 2.0.0
  - Fix image toolbar's missing icons in production
  - Edit/Delete buttons on post show page
  - Posts ordered by publication date

v 0.1.3
  - Fixed incorrect foreign keys

v 0.1.2
  - Fixed spacing around image on post show
  - Added Ruby version requirement to gemspec

v 0.1.1
  - Fixed post form that was too wide to upload images
  - Fixed views generator missing email layout

v 0.1.0
  - Added medium editor to post form, using Carrierwave for image uploads
  - Added subscriptions to both the blog and posts (i.e. subscribe to be
    notified of new posts or new comments on a given post)
  - Added comments to posts
  - Added posts