diff --git a/inst/reveal.js-5.1.0/package-lock.json b/inst/reveal.js-5.1.0/package-lock.json
index de0658c..a528f8e 100644
--- a/inst/reveal.js-5.1.0/package-lock.json
+++ b/inst/reveal.js-5.1.0/package-lock.json
@@ -26,7 +26,7 @@
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@@ -2679,6 +2679,15 @@
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@@ -2754,6 +2763,15 @@
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@@ -3737,6 +3764,15 @@
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+      "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-2.2.0.tgz",
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@@ -3894,6 +3930,39 @@
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+      "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.0.2.tgz",
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+        "inherits": "~2.0.1",
+        "isarray": "0.0.1",
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@@ -4304,6 +4374,27 @@
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+      "resolved": "https://registry.npmjs.org/esniff/-/esniff-2.0.1.tgz",
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+        "es5-ext": "^0.10.62",
+        "event-emitter": "^0.3.5",
+        "type": "^2.7.2"
+      },
+      "engines": {
+        "node": ">=0.10"
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+    "node_modules/esniff/node_modules/type": {
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+      "resolved": "https://registry.npmjs.org/type/-/type-2.7.2.tgz",
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@@ -4423,6 +4514,16 @@
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+    "node_modules/event-emitter": {
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+      "resolved": "https://registry.npmjs.org/event-emitter/-/event-emitter-0.3.5.tgz",
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-        "concat-with-sourcemaps": "^1.1.0",
-        "lodash.template": "^4.5.0",
-        "map-stream": "0.0.7",
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@@ -5958,6 +6060,148 @@
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+      "resolved": "https://registry.npmjs.org/gulp-util/-/gulp-util-3.0.8.tgz",
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+      "deprecated": "gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5",
+      "dev": true,
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+        "array-uniq": "^1.0.2",
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+        "lodash._reinterpolate": "^3.0.0",
+        "lodash.template": "^3.0.0",
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+        "object-assign": "^3.0.0",
+        "replace-ext": "0.0.1",
+        "through2": "^2.0.0",
+        "vinyl": "^0.5.0"
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+      "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
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+        "xtend": "~4.0.1"
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@@ -6013,6 +6278,18 @@
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