+* The number of internal PBKDF2 iterations used to derive the session secret
+ is configurable via $wgSessionPbkdf2Iterations.
+* Upload dialog's file upload log comment can now be configured separately for
+ local and foreign uploads.
+* $wgForeignUploadTargets now defaults to `[ 'local' ]`, where `'local'`
+ signifies local uploads. A value of `[]` (empty array) now means that
+ no upload targets are allowed, effectively disabling the upload dialog.