fix for entities sometimes being combined

Author: seveibar

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-nlp-annotate",
-  "version": "0.3.13",
+  "version": "0.3.14",
   "homepage": "https://universaldatatool.github.io/react-nlp-annotate/",
   "main": "./dist/lib.js",
   "dependencies": {
@@ -17,7 +17,6 @@
   "scripts": {
     "build": "rimraf dist && npm run build:babel",
     "build:babel": "NODE_ENV=production babel ./src --out-dir=./dist",
-    "release": "npm run build && cd dist && npm publish",
     "storybook": "start-storybook -p 9050 -s public",
     "demosite": "react-scripts start",
     "build-storybook": "build-storybook -s public",

src/merge-sequence.js

@@ -6,7 +6,7 @@ const mergeSequence = (
   const newSeq = []
   let current = [seq[0]]
   for (let i = 1; i < seq.length; i++) {
-    if (current[0].label === seq[i].label) {
+    if (!current[0].label && !seq[i].label) {
       current.push(seq[i])
     } else {
       newSeq.push({