Removed completed task from near-term list

Roadmap.md

@@ -3,9 +3,6 @@
 This is where I keep track of what to do next ...
 
 ## Near-Term
-- Easy speedups:
-  - Immediate mode branch `BRCI`, jump `JMPI`, call `JSRI` and load/store instructions.  Will cut VM cycle count by 25%-50% by eliminating `LDI`/`BRC`, `LDI`/`JMP`, `LDI/JSR` and `LDI`/`LDxx` `LDI`/`STxx` combinations.
-  - Add support to VM, Disassembler and finally to the compiler.
 - Compile direct from disk.  Would be nice to be able to compile Tetris on Apple II (rather than compile on Linux and run under Apple II EightBall VM.)
 - A way to pass string literals as subroutine arguments
 - Try to squeeze the interpreter / compiler code down a bit to save memory.
@@ -25,22 +22,7 @@ This is where I keep track of what to do next ...
     - Need to think about how a module system should work
     - Which is more useful: dynamic loading of modules at runtime, or static linking?
 - Optimize virtual machine bytecodes, based on study of real code
-  - Compiler often writes variable, and immediately needs it again.  This can be optimized easily by adding some "store and preserve" VM instructions.
-
-Today:
-```
-LDI address
-STAW
-LDI address
-LDAW
-```
-Future:
-```
-LDI address
-STAWP           # Store and preserve on Eval Stack
-```
-Similarly, repeated loads could be optimized into a single load and some `DUP`s.
-
+  - Compiler often writes variable, and immediately needs it again.
 ## Long-Term
 - High performance VM
   - Hand-coded in 6502 assembly