Update TODO list

readme.md

@@ -2,20 +2,13 @@
 
 ## TODO
 
-- [x] Add hex printing to memory-printing script
-
 - [ ] Document current state of affairs (how to run it etc)
 
 Computer:
 - [ ] Implement carry flag on SUB
 
-Assembler:
-- [x] Allow comment-only lines
-- [x] Add labels
-
 Misc:
 - [ ] Write some more complex test programs
-- [x] Consider adding a way to visualize screen memory
 - [ ] Do a proper binary version...
 
 ## Instruction set