cx16: sys.reset_system() now resets vera fully as well (such as PSG sound), kernal didn't seem to do that

compiler/res/prog8lib/cx16/syslib.p8

@@ -868,7 +868,9 @@ sys {
         ; Soft-reset the system back to initial power-on Basic prompt.
         %asm {{
             sei
-            stz  $01            ; bank the kernal in
+            stz  $01                        ; bank the kernal in
+            lda  #$80
+            sta  cx16.VERA_CTRL             ; reset Vera (kernal doesn't do this?)
             jmp  (cx16.RESET_VEC)
         }}
     }

docs/source/todo.rst

@@ -3,7 +3,7 @@ TODO
 
 For next release
 ^^^^^^^^^^^^^^^^
-- cx16: sys.reset_system() doesn't silence the vera psg (kernel bug in reset vector?)  use reset vera bit?
+- txt.chrout("a") -> crash
 - see if we can let for loops skip the loop if end<start, without adding a lot of code size/duplicating the loop condition
   this is documented behiavor to now loop around but it's too easy to forget about