diff --git a/package-lock.json b/package-lock.json
index 33bf893..e15b92d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "ot-core",
-  "version": "0.2.1",
+  "version": "0.2.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -35,23 +35,6 @@
         "json-stable-stringify": "^1.0.1"
       }
     },
-    "align-text": {
-      "version": "0.1.4",
-      "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
-      "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
-      "dev": true,
-      "requires": {
-        "kind-of": "^3.0.2",
-        "longest": "^1.0.1",
-        "repeat-string": "^1.5.2"
-      }
-    },
-    "amdefine": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/amdefine/-/amdefine-1.0.1.tgz",
-      "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=",
-      "dev": true
-    },
     "ansi-escapes": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.0.0.tgz",
@@ -1220,13 +1203,6 @@
       "integrity": "sha1-BuuE8A7qQT2oav/vrL/7Ngk7PFA=",
       "dev": true
     },
-    "camelcase": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz",
-      "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk=",
-      "dev": true,
-      "optional": true
-    },
     "caniuse-lite": {
       "version": "1.0.30000727",
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30000727.tgz",
@@ -1239,17 +1215,6 @@
       "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
       "dev": true
     },
-    "center-align": {
-      "version": "0.1.3",
-      "resolved": "https://registry.npmjs.org/center-align/-/center-align-0.1.3.tgz",
-      "integrity": "sha1-qg0yYptu6XIgBBHL1EYckHvCt60=",
-      "dev": true,
-      "optional": true,
-      "requires": {
-        "align-text": "^0.1.3",
-        "lazy-cache": "^1.0.3"
-      }
-    },
     "chalk": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
@@ -1287,27 +1252,6 @@
       "integrity": "sha512-vHDDF/bP9RYpTWtUhpJRhCFdvvp3iDWvEbuDbWgvjUrNGV1MXJrE0MPcwGtEled04m61iwdBLUIHZtDgzWS4ZQ==",
       "dev": true
     },
-    "cliui": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-2.1.0.tgz",
-      "integrity": "sha1-S0dXYP+AJkx2LDoXGQMukcf+oNE=",
-      "dev": true,
-      "optional": true,
-      "requires": {
-        "center-align": "^0.1.1",
-        "right-align": "^0.1.1",
-        "wordwrap": "0.0.2"
-      },
-      "dependencies": {
-        "wordwrap": {
-          "version": "0.0.2",
-          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
-          "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8=",
-          "dev": true,
-          "optional": true
-        }
-      }
-    },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -1782,7 +1726,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -1803,12 +1748,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -1823,17 +1770,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -1950,7 +1900,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -1962,6 +1913,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -1976,6 +1928,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -1983,12 +1936,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -2007,6 +1962,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -2087,7 +2043,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -2099,6 +2056,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -2184,7 +2142,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -2220,6 +2179,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -2239,6 +2199,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -2282,12 +2243,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -2372,31 +2335,42 @@
       "dev": true
     },
     "handlebars": {
-      "version": "4.0.10",
-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.0.10.tgz",
-      "integrity": "sha1-PTDHGLCaPZbyPqTMH0A8TTup/08=",
+      "version": "4.7.7",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.7.tgz",
+      "integrity": "sha512-aAcXm5OAfE/8IXkcZvCepKU3VzW1/39Fb5ZuqMtgI/hT8X2YgoMvBY5dLhq/cpOvw7Lk1nK/UF71aLG/ZnVYRA==",
       "dev": true,
       "requires": {
-        "async": "^1.4.0",
-        "optimist": "^0.6.1",
-        "source-map": "^0.4.4",
-        "uglify-js": "^2.6"
+        "minimist": "^1.2.5",
+        "neo-async": "^2.6.0",
+        "source-map": "^0.6.1",
+        "uglify-js": "^3.1.4",
+        "wordwrap": "^1.0.0"
       },
       "dependencies": {
-        "async": {
-          "version": "1.5.2",
-          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+        "minimist": {
+          "version": "1.2.5",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+          "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
           "dev": true
         },
         "source-map": {
-          "version": "0.4.4",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.4.4.tgz",
-          "integrity": "sha1-66T12pwNyZneaAMti092FzZSA2s=",
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "uglify-js": {
+          "version": "3.13.5",
+          "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.13.5.tgz",
+          "integrity": "sha512-xtB8yEqIkn7zmOyS2zUNBsYCBRhDkvlNxMMY2smuJ/qA8NCHeQvKCF3i9Z4k8FJH4+PJvZRtMrPynfZ75+CSZw==",
           "dev": true,
-          "requires": {
-            "amdefine": ">=0.0.4"
-          }
+          "optional": true
+        },
+        "wordwrap": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
+          "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+          "dev": true
         }
       }
     },
@@ -3555,13 +3529,6 @@
         "is-buffer": "^1.1.5"
       }
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-    "lazy-cache": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/lazy-cache/-/lazy-cache-1.0.4.tgz",
-      "integrity": "sha1-odePw6UEdMuAhF07O24dpJpEbo4=",
-      "dev": true,
-      "optional": true
-    },
     "lcid": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/lcid/-/lcid-1.0.0.tgz",
@@ -3623,12 +3590,6 @@
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
       "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
     },
-    "longest": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
-      "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
-    },
     "loose-envify": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.3.1.tgz",
@@ -3757,6 +3718,12 @@
       "integrity": "sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=",
       "dev": true
     },
+    "neo-async": {
+      "version": "2.6.2",
+      "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
+      "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==",
+      "dev": true
+    },
     "node-fetch": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.3.0.tgz",
@@ -3853,16 +3820,6 @@
         "wrappy": "1"
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-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
     "optionator": {
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       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.2.tgz",
@@ -4364,16 +4321,6 @@
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       "dev": true
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-    "right-align": {
-      "version": "0.1.3",
-      "resolved": "https://registry.npmjs.org/right-align/-/right-align-0.1.3.tgz",
-      "integrity": "sha1-YTObci/mo1FWiSENJOFMlhSGE+8=",
-      "dev": true,
-      "optional": true,
-      "requires": {
-        "align-text": "^0.1.1"
-      }
-    },
     "rimraf": {
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@@ -4740,40 +4687,6 @@
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-    "uglify-js": {
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-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-2.8.29.tgz",
-      "integrity": "sha1-KcVzMUgFe7Th913zW3qcty5qWd0=",
-      "dev": true,
-      "optional": true,
-      "requires": {
-        "source-map": "~0.5.1",
-        "uglify-to-browserify": "~1.0.0",
-        "yargs": "~3.10.0"
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-      "dependencies": {
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-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
-          "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "camelcase": "^1.0.2",
-            "cliui": "^2.1.0",
-            "decamelize": "^1.0.0",
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-    "uglify-to-browserify": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz",
-      "integrity": "sha1-bgkk1r2mta/jSeOabWMoUKD4grc=",
-      "dev": true,
-      "optional": true
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       "resolved": "https://registry.npmjs.org/user-home/-/user-home-1.1.1.tgz",
@@ -4899,19 +4812,6 @@
       "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
       "dev": true
     },
-    "window-size": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.0.tgz",
-      "integrity": "sha1-VDjNLqk7IC76Ohn+iIeu58lPnJ0=",
-      "dev": true,
-      "optional": true
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
     "worker-farm": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.5.0.tgz",