added particles on beat slicing (fixes #54)

package.json

@@ -7,18 +7,13 @@
   },
   "dependencies": {
     "aframe-animation-component": "^5.1.2",
-    "aframe-animation-timeline-component": "^1.3.1",
     "aframe-audioanalyser-component": "^4.0.1",
-    "aframe-cubemap-component": "^0.1.2",
     "aframe-event-decorators": "^1.0.2",
     "aframe-event-set-component": "^4.0.1",
     "aframe-geometry-merger-component": "^2.0.0-beta1",
-    "aframe-gltf-part-component": "1.1.0",
     "aframe-haptics-component": "^1.4.2",
     "aframe-layout-component": "^5.2.0",
     "aframe-orbit-controls": "^1.2.0",
-    "aframe-particle-system-component": "^1.0.11",
-    "aframe-particleplayer-component": "^2.0.0-beta2",
     "aframe-proxy-event-component": "^2.1.0",
     "aframe-slice9-component": "^1.0.0",
     "aframe-state-component": "^5.0.0-beta6",