added a few simple effects, updated todo

index.html

@@ -7,9 +7,17 @@
 code: <a href="http://github.com/a1k0n/jsxm/">github.com/a1k0n/jsxm</a>
 tune: my dirty old kamel - <a href="http://zalza.bandcamp.com">Zalza</a>
 todo:
- - instrument fadeout
+ - unroll short sample loops
+ - unroll mixer code loops
  - pingpong loops
- - various XM effects are missing
+ - multi-sample instruments
+ - instrument fadeout
+ - missing XM effects (in rough order of priority):
+   - Rxy - retrigger
+   - Bxx / Dxx - position / pattern jumps
+   - 7xy - tremolo
+   - E3x, E4x, E5x, E6x, E7x, E9x, EDx, EEx
+   - Gxx, Hxy, Kxx, Lxx, Pxy, Txy
  - oscilloscopes
 </pre>
 <canvas id='vu' width=224 height=64></canvas>