- [FIX] ui module should only update renderer when it actually changes

- [NEW] Disassembly window now can scroll with cursors or mouse wheel
- [NEW] Added valgrind script and supporting file

z80debug.h

@@ -27,6 +27,10 @@ namespace z80debug
 
     void loadngo(const char* filename, const char* addr);
 
+    void setcursor(const uint16_t address);
+    void cursorfwd();
+    void cursorback();
+
     namespace history
     {
         void store();