update graphs on new data

package.json

@@ -60,9 +60,8 @@
     "stream-selector": "^0.1.1",
     "streamsaver": "^1.0.1",
     "thyming": "^0.1.1",
-    "vega": "^5.3.4",
-    "vega-lite": "^3.0.0",
-    "vega-tooltip": "^0.4.0"
+    "vega": "^5.0.0",
+    "vega-lite": "^4.0.0"
   },
   "devDependencies": {
     "@babel/core": "^7.6.2",

src/components/CanGraph.js

@@ -192,7 +192,9 @@ export default class CanGraph extends Component {
     if (!this.view) {
       return true;
     }
-    if (this.state.spec !== nextState.spec) {
+    if (this.props.messages !== nextProps.messages || this.props.plottedSignal !== nextProps.plottedSignal ||
+      this.segmentIsNew(nextProps.segment) || this.state.spec !== nextState.spec)
+    {
       return true;
     }
     if (this.state.data !== nextState.data) {