Fix clipboard on OSX, build-all and unicode support

frontend/package-lock.json

@@ -12,6 +12,7 @@
         "xterm": "5.3.0",
         "xterm-addon-fit": "0.8.0",
         "xterm-addon-search": "0.13.0",
+        "xterm-addon-unicode11": "0.6.0",
         "xterm-addon-web-links": "0.9.0"
       }
     },
@@ -42,6 +43,16 @@
         "xterm": "^5.0.0"
       }
     },
+    "node_modules/xterm-addon-unicode11": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/xterm-addon-unicode11/-/xterm-addon-unicode11-0.6.0.tgz",
+      "integrity": "sha512-5pkb8YoS/deRtNqQRw8t640mu+Ga8B2MG3RXGQu0bwgcfr8XiXIRI880TWM49ICAHhTmnOLPzIIBIjEnCq7k2A==",
+      "deprecated": "This package is now deprecated. Move to @xterm/addon-unicode11 instead.",
+      "license": "MIT",
+      "peerDependencies": {
+        "xterm": "^5.0.0"
+      }
+    },
     "node_modules/xterm-addon-web-links": {
       "version": "0.9.0",
       "resolved": "https://registry.npmjs.org/xterm-addon-web-links/-/xterm-addon-web-links-0.9.0.tgz",