Update xterm to 3.4.1 (#3032)

package.json

@@ -10,7 +10,7 @@
     "test:unit": "ava test/unit",
     "test:unit:watch": "yarn run test:unit -- --watch",
     "prepush": "yarn test",
-    "postinstall": "electron-builder install-app-deps && yarn run rebuild-node-pty && yarn --cwd node_modules/xterm",
+    "postinstall": "electron-builder install-app-deps && yarn run rebuild-node-pty",
     "rebuild-node-pty": "electron-rebuild -f -w app/node_modules/node-pty -m app",
     "dist":
       "yarn run build && cross-env BABEL_ENV=production babel --out-file app/renderer/bundle.js --no-comments --minified app/renderer/bundle.js && build",
@@ -200,7 +200,7 @@
     "styled-jsx": "2.2.6",
     "stylis": "3.5.0",
     "uuid": "3.1.0",
-    "xterm": "chabou/xterm.js#7cb4b8e"
+    "xterm": "3.4.1"
   },
   "devDependencies": {
     "ava": "0.25.0",
@@ -216,10 +216,10 @@
     "electron-builder-squirrel-windows": "20.5.0",
     "electron-devtools-installer": "2.2.3",
     "electron-rebuild": "1.7.3",
-    "eslint": "^4.7.2",
-    "eslint-config-prettier": "^2.6.0",
-    "eslint-plugin-prettier": "^2.3.1",
-    "eslint-plugin-react": "^7.3.0",
+    "eslint": "4.7.2",
+    "eslint-config-prettier": "2.6.0",
+    "eslint-plugin-prettier": "2.3.1",
+    "eslint-plugin-react": "7.3.0",
     "husky": "0.14.3",
     "inquirer": "5.1.0",
     "node-gyp": "3.6.2",