Bump js-yaml from 3.6.1 to 3.13.1 (#50)

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.6.1 to 3.13.1.
- [Release notes](https://github.com/nodeca/js-yaml/releases)
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/3.6.1...3.13.1)

package-lock.json

@@ -167,7 +167,7 @@
       "dependencies": {
         "acorn": {
           "version": "2.7.0",
-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
           "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc=",
           "dev": true,
           "optional": true
@@ -2455,7 +2455,7 @@
         },
         "rimraf": {
           "version": "2.4.5",
-          "resolved": "http://registry.npmjs.org/rimraf/-/rimraf-2.4.5.tgz",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.4.5.tgz",
           "integrity": "sha1-7nEM5dk6j9uFb7Xqj/Di11k0sto=",
           "dev": true,
           "requires": {
@@ -2896,7 +2896,7 @@
       "dependencies": {
         "pify": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
           "dev": true
         }
@@ -3375,7 +3375,7 @@
         },
         "minimist": {
           "version": "1.2.0",
-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
           "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
           "dev": true
         }
@@ -3465,8 +3465,7 @@
         "esprima": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.0.tgz",
-          "integrity": "sha512-oftTcaMu/EGrEIu904mWteKIv8vMuOgGYo7EhVJJN00R/EED9DCua/xxHRdYnKtcECzVg7xOWhflvJMnqcFZjw==",
-          "dev": true
+          "integrity": "sha512-oftTcaMu/EGrEIu904mWteKIv8vMuOgGYo7EhVJJN00R/EED9DCua/xxHRdYnKtcECzVg7xOWhflvJMnqcFZjw=="
         },
         "globals": {
           "version": "11.7.0",
@@ -3474,16 +3473,6 @@
           "integrity": "sha512-K8BNSPySfeShBQXsahYB/AbbWruVOTyVpgoIDnl8odPpeSfP2J5QO2oLFFdl2j7GfDCtZj2bMKar2T49itTPCg==",
           "dev": true
         },
-        "js-yaml": {
-          "version": "3.12.0",
-          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.0.tgz",
-          "integrity": "sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==",
-          "dev": true,
-          "requires": {
-            "argparse": "^1.0.7",
-            "esprima": "^4.0.0"
-          }
-        },
         "strip-ansi": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
@@ -3601,7 +3590,7 @@
           "dependencies": {
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
               "dev": true
             }
@@ -3618,7 +3607,7 @@
           "dependencies": {
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
               "dev": true
             }
@@ -6558,7 +6547,7 @@
       "dependencies": {
         "pify": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
           "dev": true
         }
@@ -7005,7 +6994,7 @@
         },
         "readable-stream": {
           "version": "1.1.14",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
           "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
           "dev": true,
           "requires": {
@@ -7730,13 +7719,21 @@
       "dev": true
     },
     "js-yaml": {
-      "version": "3.6.1",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.6.1.tgz",
-      "integrity": "sha1-bl/mfYsgXOTSL60Ft3geja3MSzA=",
+      "version": "3.13.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.1.tgz",
+      "integrity": "sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==",
       "dev": true,
       "requires": {
         "argparse": "^1.0.7",
-        "esprima": "^2.6.0"
+        "esprima": "^4.0.0"
+      },
+      "dependencies": {
+        "esprima": {
+          "version": "4.0.1",
+          "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
+          "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==",
+          "dev": true
+        }
       }
     },
     "jsan": {
@@ -7809,7 +7806,7 @@
       "dependencies": {
         "acorn": {
           "version": "2.7.0",
-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
           "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc=",
           "dev": true,
           "optional": true
@@ -8302,7 +8299,7 @@
       "dependencies": {
         "pify": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
           "dev": true
         }
@@ -14882,7 +14879,7 @@
         },
         "ws": {
           "version": "5.1.1",
-          "resolved": "http://registry.npmjs.org/ws/-/ws-5.1.1.tgz",
+          "resolved": "https://registry.npmjs.org/ws/-/ws-5.1.1.tgz",
           "integrity": "sha512-bOusvpCb09TOBLbpMKszd45WKC2KPtxiyiHanv+H2DE3Az+1db5a/L7sVJZVDPUC1Br8f0SKRr1KjLpD1U/IAw==",
           "dev": true,
           "requires": {
@@ -14993,7 +14990,7 @@
         },
         "yargs": {
           "version": "11.1.0",
-          "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
           "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
           "dev": true,
           "requires": {
@@ -15193,8 +15190,7 @@
         "esprima": {
           "version": "4.0.1",
           "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
-          "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==",
-          "dev": true
+          "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A=="
         },
         "external-editor": {
           "version": "3.0.3",
@@ -15292,16 +15288,6 @@
           "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
           "dev": true
         },
-        "js-yaml": {
-          "version": "3.12.0",
-          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.0.tgz",
-          "integrity": "sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==",
-          "dev": true,
-          "requires": {
-            "argparse": "^1.0.7",
-            "esprima": "^4.0.0"
-          }
-        },
         "json-schema-traverse": {
           "version": "0.4.1",
           "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
@@ -15441,7 +15427,7 @@
         },
         "web3": {
           "version": "0.16.0",
-          "resolved": "http://registry.npmjs.org/web3/-/web3-0.16.0.tgz",
+          "resolved": "https://registry.npmjs.org/web3/-/web3-0.16.0.tgz",
           "integrity": "sha1-pFVBdc1GKUMDWx8dOUMvdBxrYBk=",
           "dev": true,
           "requires": {
@@ -17039,7 +17025,7 @@
         },
         "web3": {
           "version": "0.20.6",
-          "resolved": "http://registry.npmjs.org/web3/-/web3-0.20.6.tgz",
+          "resolved": "https://registry.npmjs.org/web3/-/web3-0.20.6.tgz",
           "integrity": "sha1-PpcwauAk+yThCj11yIQwJWIhUSA=",
           "dev": true,
           "requires": {
@@ -17069,7 +17055,7 @@
         },
         "web3": {
           "version": "0.20.6",
-          "resolved": "http://registry.npmjs.org/web3/-/web3-0.20.6.tgz",
+          "resolved": "https://registry.npmjs.org/web3/-/web3-0.20.6.tgz",
           "integrity": "sha1-PpcwauAk+yThCj11yIQwJWIhUSA=",
           "dev": true,
           "requires": {
@@ -19319,7 +19305,7 @@
         },
         "load-json-file": {
           "version": "2.0.0",
-          "resolved": "http://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
           "integrity": "sha1-eUfkIUmvgNaWy/eXvKq8/h/inKg=",
           "dev": true,
           "requires": {
@@ -19350,7 +19336,7 @@
           "dependencies": {
             "commander": {
               "version": "2.15.1",
-              "resolved": "http://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
+              "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
               "integrity": "sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==",
               "dev": true
             },
@@ -19568,7 +19554,7 @@
         },
         "web3": {
           "version": "0.20.6",
-          "resolved": "http://registry.npmjs.org/web3/-/web3-0.20.6.tgz",
+          "resolved": "https://registry.npmjs.org/web3/-/web3-0.20.6.tgz",
           "integrity": "sha1-PpcwauAk+yThCj11yIQwJWIhUSA=",
           "dev": true,
           "requires": {