friendica/friendica — pull request #328 by fabrixxm (2012-06-07 18:31:18+00:00)
Title: PNG with alpha channel

Add support to png with alpha to images related functions.
Photo class use jpeg or png from mime type passed to constructor, and keeps alpha channel on scale/crop/rotation.
Image type is saved in 'type' column of 'photo' table in db.
mod/image.php return correct Content-Type.
PNG images can used as profile image.