3.1.0

• [closed] clarify AVATAR_GRAVATAR_DEFAULT docs #121
• [closed] Smallest/Fastest/Easiest/Least Invasive way to get custom templates #134
• [closed] Maintain verbosity settings. #127
• [closed] Fixed migrations path in .coveragerc. #131
• [closed] add feature of customizing the attribute of avatar img #124
• [closed] add default of AVATAR_STORAGE_DIR to docs #123
• [closed] Add support for Gravitar's forcedefault request parameter #122
• [closed] New setting to specify path to a method for avatar file path #120
• [closed] Preserve RGBA image.mode #75
• [closed] EXPOSE_USERNAMES prevents sensitive information leakage #105
• [closed] fix pt_BR translation errors and make compatible with Django 1.9 #119
• [closed] Adding the AVATAR_GRAVATAR_FIELD setting #82
• [closed] added database-level enforcement of unique user+primary pair in Avatar model #111
• [closed] translate string in French #110