diff --git a/package-lock.json b/package-lock.json
index ca7ae57..5a72b98 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1913,7 +1913,8 @@
 				},
 				"ansi-regex": {
 					"version": "2.1.1",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"aproba": {
 					"version": "1.2.0",
@@ -1931,11 +1932,13 @@
 				},
 				"balanced-match": {
 					"version": "1.0.0",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"brace-expansion": {
 					"version": "1.1.11",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"balanced-match": "^1.0.0",
 						"concat-map": "0.0.1"
@@ -1948,15 +1951,18 @@
 				},
 				"code-point-at": {
 					"version": "1.1.0",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"concat-map": {
 					"version": "0.0.1",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"console-control-strings": {
 					"version": "1.1.0",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"core-util-is": {
 					"version": "1.0.2",
@@ -2059,7 +2065,8 @@
 				},
 				"inherits": {
 					"version": "2.0.3",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"ini": {
 					"version": "1.3.5",
@@ -2069,6 +2076,7 @@
 				"is-fullwidth-code-point": {
 					"version": "1.0.0",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"number-is-nan": "^1.0.0"
 					}
@@ -2081,17 +2089,20 @@
 				"minimatch": {
 					"version": "3.0.4",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"brace-expansion": "^1.1.7"
 					}
 				},
 				"minimist": {
 					"version": "0.0.8",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"minipass": {
 					"version": "2.3.5",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"safe-buffer": "^5.1.2",
 						"yallist": "^3.0.0"
@@ -2108,6 +2119,7 @@
 				"mkdirp": {
 					"version": "0.5.1",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"minimist": "0.0.8"
 					}
@@ -2180,7 +2192,8 @@
 				},
 				"number-is-nan": {
 					"version": "1.0.1",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"object-assign": {
 					"version": "4.1.1",
@@ -2190,6 +2203,7 @@
 				"once": {
 					"version": "1.4.0",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"wrappy": "1"
 					}
@@ -2265,7 +2279,8 @@
 				},
 				"safe-buffer": {
 					"version": "5.1.2",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"safer-buffer": {
 					"version": "2.1.2",
@@ -2295,6 +2310,7 @@
 				"string-width": {
 					"version": "1.0.2",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"code-point-at": "^1.0.0",
 						"is-fullwidth-code-point": "^1.0.0",
@@ -2312,6 +2328,7 @@
 				"strip-ansi": {
 					"version": "3.0.1",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"ansi-regex": "^2.0.0"
 					}
@@ -2350,11 +2367,13 @@
 				},
 				"wrappy": {
 					"version": "1.0.2",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"yallist": {
 					"version": "3.0.3",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				}
 			}
 		},
@@ -2512,9 +2531,9 @@
 			"dev": true
 		},
 		"highlight.js": {
-			"version": "9.12.0",
-			"resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.12.0.tgz",
-			"integrity": "sha1-5tnb5Xy+/mB1HwKvM2GVhwyQwB4="
+			"version": "9.18.5",
+			"resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.18.5.tgz",
+			"integrity": "sha512-a5bFyofd/BHCX52/8i8uJkjr9DYwXIPnM/plwI6W7ezItLGqzt7X2G2nXuYSfsIJdkwwj/g9DG1LkcGJI/dDoA=="
 		},
 		"home-or-tmp": {
 			"version": "2.0.0",
@@ -3335,6 +3354,7 @@
 					"version": "0.1.4",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"kind-of": "^3.0.2",
 						"longest": "^1.0.1",
@@ -4300,7 +4320,8 @@
 				"longest": {
 					"version": "1.0.1",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"lru-cache": {
 					"version": "4.1.3",