Remove obsolete items from the TODO list.
Remove obsolete items from the TODO list.

giflib and libungif were merged, that's done.

Toshio was right - giving extension blocks special slots was a bad idea.
I've removed it.

cention-sany/libgif,rcancro/giflib,Distrotech/giflib,Distrotech/giflib,rcancro/giflib,cention-sany/libgif,rcancro/giflib