Update TODO

TODO.md

@@ -3,10 +3,10 @@
 * [x] try some motors
 * [x] add `control.interrupt(ms, () => { ... sync function ... })` - running outside regular JS thread
 * [x] add `//% whenUsed` on global variable initializers in PXT
-* [ ] fix `@PXT@:` handling for ELF in PXT
+* [x] fix `@PXT@:` handling for ELF in PXT
 * [x] parse Python field lists into offsets
 
 ## Further down
 * [x] have some protocol for restarting user app if it's running (flag file somewhere?)
-* [ ] display panic code on the screen
+* [x] display panic code on the screen
 * [ ] catch SIGSEGV and panic