Update handlebars dependency to ^4.1.2 (#282)

* Update handlebars dependency to ^4.1.2

Handlebars has a security advisory out for 4.1.1, so yarn/npm audit will complain about ^4.1.0. This is to fix that.

* Update yarn.lock

Author: juliusl

package.json

@@ -42,7 +42,7 @@
     "commander": "^2.15.1",
     "cross-spawn": "^6.0.5",
     "filesize": "^3.6.1",
-    "handlebars": "^4.1.0",
+    "handlebars": "^4.1.2",
     "inspectpack": "^4.2.1",
     "most": "^1.7.3",
     "neo-blessed": "^0.2.0",

yarn.lock

@@ -2113,6 +2113,17 @@ handlebars@^4.1.0:
   optionalDependencies:
     uglify-js "^3.1.4"
 
+handlebars@^4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.1.2.tgz#b6b37c1ced0306b221e094fc7aca3ec23b131b67"
+  integrity sha512-nvfrjqvt9xQ8Z/w0ijewdD/vvWDTOweBUm96NTr66Wfvo1mJenBLwcYmPs3TIBP5ruzYGD7Hx/DaM9RmhroGPw==
+  dependencies:
+    neo-async "^2.6.0"
+    optimist "^0.6.1"
+    source-map "^0.6.1"
+  optionalDependencies:
+    uglify-js "^3.1.4"
+
 has-ansi@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
@@ -3129,7 +3140,7 @@ negotiator@0.6.1:
   resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.1.tgz#2b327184e8992101177b28563fb5e7102acd0ca9"
   integrity sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk=
 
-neo-async@^2.5.0:
+neo-async@^2.5.0, neo-async@^2.6.0:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.0.tgz#b9d15e4d71c6762908654b5183ed38b753340835"
   integrity sha512-MFh0d/Wa7vkKO3Y3LlacqAEeHK0mckVqzDieUKTT+KGxi+zIpeVsFxymkIiRpbpDziHc290Xr9A1O4Om7otoRA==