diff --git a/package-lock.json b/package-lock.json
index 445495cd..aa5b9213 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -9535,13 +9590,49 @@
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-      "integrity": "sha1-uzLs2HwnEErm7kS1o8y/Drsa7ek=",
+      "version": "1.0.32",
+      "resolved": "https://registry.npmjs.org/portfinder/-/portfinder-1.0.32.tgz",
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-        "async": "^1.5.2",
-        "debug": "^2.2.0",
-        "mkdirp": "0.5.x"
+        "async": "^2.6.4",
+        "debug": "^3.2.7",
+        "mkdirp": "^0.5.6"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.4",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
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+          "requires": {
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+          }
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+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.7.tgz",
+          "integrity": "sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==",
+          "requires": {
+            "ms": "^2.1.1"
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+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.8.tgz",
+          "integrity": "sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA=="
+        },
+        "mkdirp": {
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+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+          "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+          "requires": {
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+          }
+        },
+        "ms": {
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+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        }
       }
     },
     "posix-character-classes": {
@@ -9694,9 +9785,12 @@
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-      "resolved": "https://registry.npmjs.org/qs/-/qs-2.3.3.tgz",
-      "integrity": "sha1-6eha2+ddoLvkyOBHaghikPhjtAQ="
+      "version": "6.11.2",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.11.2.tgz",
+      "integrity": "sha512-tDNIz22aBzCDxLtVH++VnTfzxlfeK5CbqohpSqpJgj1Wg/cQbStNAz3NuqCs5vV+pjBsK4x4pN9HlVh7rcYRiA==",
+      "requires": {
+        "side-channel": "^1.0.4"
+      }
     },
     "querystring": {
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@@ -10001,7 +10095,7 @@
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-      "integrity": "sha1-kl0mAdOaxIXgkc8NpcbmlNw9yv8="
+      "integrity": "sha512-KigOCHcocU3XODJxsu8i/j8T9tzT4adHiecwORRQ0ZZFcp7ahwXuRU1m+yuO90C5ZUyGeGfocHDI14M3L3yDAQ=="
     },
     "resolve": {
       "version": "1.5.0",
@@ -10188,6 +10282,11 @@
         }
       }
     },
+    "secure-compare": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/secure-compare/-/secure-compare-3.0.1.tgz",
+      "integrity": "sha512-AckIIV90rPDcBcglUwXPF3kg0P0qmPsPXAj6BBEENQE1p5yA1xfmDJzfi1Tappj37Pv2mVbKpL3Z1T+Nn7k1Qw=="
+    },
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       "resolved": "https://registry.npmjs.org/semver/-/semver-5.4.1.tgz",
@@ -10206,6 +10305,17 @@
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       "dev": true
     },
+    "set-function-length": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/set-function-length/-/set-function-length-1.1.1.tgz",
+      "integrity": "sha512-VoaqjbBJKiWtg4yRcKBQ7g7wnGnLV3M8oLvVWwOk2PdYY6PEFegR1vezXR0tw6fZGF9csVakIRjrJiy2veSBFQ==",
+      "requires": {
+        "define-data-property": "^1.1.1",
+        "get-intrinsic": "^1.2.1",
+        "gopd": "^1.0.1",
+        "has-property-descriptors": "^1.0.0"
+      }
+    },
     "set-immediate-shim": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz",
@@ -10267,6 +10377,23 @@
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       "dev": true
     },
+    "side-channel": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.0.4.tgz",
+      "integrity": "sha512-q5XPytqFEIKHkGdiMIrY10mvLRvnQh42/+GoBlFW3b2LXLE2xxJpZFdm94we0BaoV3RwJyGqg5wS7epxTv0Zvw==",
+      "requires": {
+        "call-bind": "^1.0.0",
+        "get-intrinsic": "^1.0.2",
+        "object-inspect": "^1.9.0"
+      },
+      "dependencies": {
+        "object-inspect": {
+          "version": "1.13.1",
+          "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.1.tgz",
+          "integrity": "sha512-5qoj1RUiKOMsCCNLV1CBiPYE10sziTsnmNxkAI/rZhiD63CF7IqdFGC/XzjWjpSgLf0LxXX3bDFIh0E18f6UhQ=="
+        }
+      }
+    },
     "signal-exit": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
@@ -10615,6 +10742,15 @@
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       "dev": true
     },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
+    },
     "string-width": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
@@ -10654,15 +10790,6 @@
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-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
-      "dev": true,
-      "requires": {
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-      }
-    },
     "strip-ansi": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
@@ -11340,11 +11467,11 @@
       "optional": true
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-      "version": "0.4.6",
-      "resolved": "https://registry.npmjs.org/union/-/union-0.4.6.tgz",
-      "integrity": "sha1-GY+9rrolTniLDvy2MLwR8kopWeA=",
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/union/-/union-0.5.0.tgz",
+      "integrity": "sha512-N6uOhuW6zO95P3Mel2I2zMsbsanvvtgn6jVqJv4vbVcz/JN0OkL9suomjQGmWtxJQXOCqUJvquc1sMeNz/IwlA==",
       "requires": {
-        "qs": "~2.3.3"
+        "qs": "^6.4.0"
       }
     },
     "union-value": {
@@ -11494,7 +11621,7 @@
     "url-join": {
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       "resolved": "https://registry.npmjs.org/url-join/-/url-join-2.0.5.tgz",
-      "integrity": "sha1-WvIvGMBSoACkjXuCxenC4v7tpyg="
+      "integrity": "sha512-c2H1fIgpUdwFRIru9HFno5DT73Ok8hg5oOb5AT3ayIgvCRfxgs2jyt5Slw8kEB7j3QUr6yJmMPDT/odjk7jXow=="
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@@ -12321,24 +12448,24 @@
               "dev": true,
               "optional": true
             },
-            "string-width": {
-              "version": "1.0.2",
+            "string_decoder": {
+              "version": "1.1.1",
               "bundled": true,
               "dev": true,
               "optional": true,
               "requires": {
-                "code-point-at": "^1.0.0",
-                "is-fullwidth-code-point": "^1.0.0",
-                "strip-ansi": "^3.0.0"
+                "safe-buffer": "~5.1.0"
               }
             },
-            "string_decoder": {
-              "version": "1.1.1",
+            "string-width": {
+              "version": "1.0.2",
               "bundled": true,
               "dev": true,
               "optional": true,
               "requires": {
-                "safe-buffer": "~5.1.0"
+                "code-point-at": "^1.0.0",
+                "is-fullwidth-code-point": "^1.0.0",
+                "strip-ansi": "^3.0.0"
               }
             },
             "strip-ansi": {
diff --git a/package.json b/package.json
index 632d4d2d..0111d916 100644
--- a/package.json
+++ b/package.json
@@ -81,6 +81,6 @@
     "yargs": "13.2.2"
   },
   "dependencies": {
-    "http-server": "^0.11.1"
+    "http-server": "^0.13.0"
   }
 }