Update maze runner and dhgr tool source

src/samplesrc/maze.pla

@@ -473,6 +473,12 @@ if ^arg
 else
     conio:textmode(40)
     hgrMode(hgrPage1)
+    if lz4Read("SHACK.LZ4", $2000, $4000, heapmark, heapmark + heapavail - 256) == LZ4_OK
+        for ref = 0 to 30
+            call($FCA8, $FF, $00, $00, $00)
+            if conio:keypressed(); getc; break; fin
+        next
+    fin
     lz4Read("MAZE.SPLASH.LZ4", $2000, $4000, heapmark, heapmark + heapavail - 256)
     seq = musicRead("MAZE.SEQ")
     musicPlay(seq, FALSE)