added TODO for compile time keyword

src/main/java/dk/camelot64/kickc/TODO.txt

@@ -11,7 +11,10 @@ Features
 - Improve locality of block sequence for if(cond) { stmt1; } else { stmt2; } to if(!cond) goto @else stmt1; jmp @end; @else: stmt2; @end:
 - Optimize if/else by swapping if & else if cond is easier to evaluate than !cond.
 - Let { stmt } and for() {} introduce a new anonymous scope. (But not when optimizing)
-- Add preprocessing / find a way to allow some functions to run at compile time
+- Add preprocessing / find a way to allow some functions to run at compile time. This will always be to initialize memory to a certain state.
+  - Syntax: A preprocess keyword usable before initializers or global statements blocks? (maybe compiletime is a better word as it is not a preprocessor in the C-sense of the word)
+  - byte[$100] sins = preprocess { [x] = sin(2.0*PI*x/$100) };
+  - byte[$100] sins; preprocess { for(byte x : 0 $ff) { sins[x] = sin(2.0*PI*x/$100)}};
 - Implement inline compilation of functions (and a mechanism for choosing which methods / calls to inline)
 - Handle long branches
 - Optimize loops by unrolling them somewhat