Changes

| There's a bunch of work that will need to be done here.

| {{bug|omtc}}

|-

| Off main thread image decoding

| This will need some significant rearchitecture to work well

| ''TBD''

|-

| Image lib improvements

| This includes using/building a new more generic cache and fixing up some of the interfaces exposed by imagelib (e.g. imgIRequest should not be an nsIRequest)

| ''TBD''

|}