diff --git a/package-lock.json b/package-lock.json
index 67abab1..009abd7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2,6 +2,7 @@
   "name": "iiif-manifest-editor",
   "version": "0.7.0",
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@@ -10,26 +11,31 @@
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-      "integrity": "sha1-hiRnWMfdbSGmR0/whKR0DsBesh8=",
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-        "negotiator": "0.6.1"
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-          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.30.0.tgz",
-          "integrity": "sha1-dMZD2i3Z1qRTmZY0ZbJtXKfXHwE="
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-          "integrity": "sha1-Cdejk/A+mVp5+K+Fe3Cp4KsWVXo=",
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+          "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
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-      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
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@@ -1428,6 +1434,7 @@
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       "integrity": "sha1-h2eKGdhLR9hZuDGZvVm84iKxBFQ=",
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@@ -1445,6 +1452,7 @@
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@@ -1452,12 +1460,14 @@
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+          "integrity": "sha512-eRzhrN1WSINYCDCbrz796z37LOe3m5tmW7RQf6oBntukAG1nmovJvhnwHHRMAfeoItc1m2Hk02WER2aQ/iqs+A==",
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@@ -1638,7 +1648,8 @@
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-      "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
+      "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg=",
+      "dev": true
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@@ -2019,9 +2030,19 @@
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-      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
+      "integrity": "sha512-FveZTNuGw04cxlAiWbzi6zTAL/lhehaWbTtgluJh4/E95DqMwTmha3KZN1aAWA8cFIhHzMZUvLevkw5Rqk+tSQ==",
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+        }
+      }
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@@ -2037,12 +2058,13 @@
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-      "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
+      "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=",
+      "dev": true
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-      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+      "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
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@@ -2377,7 +2399,7 @@
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-      "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
+      "integrity": "sha512-3NdhDuEXnfun/z7x9GOElY49LoqVHoGScmOKwmxhsS8N5Y+Z8KyPPDnaSzqWgYt/ji4mqwfTS34Htrk0zPIXVg=="
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@@ -2789,7 +2811,7 @@
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-      "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
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     "event-emitter": {
       "version": "0.3.5",
@@ -2856,6 +2878,10 @@
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       }
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+    "exjs": {
+      "version": "git://github.com/BSick7/exjs.git#98195810790c0e61cb5beb510da4b756528f92f2",
+      "from": "git://github.com/BSick7/exjs.git#98195810790c0e61cb5beb510da4b756528f92f2"
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@@ -2934,42 +2960,69 @@
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-      "resolved": "https://registry.npmjs.org/express/-/express-4.16.2.tgz",
-      "integrity": "sha1-41xt/i1kt9ygpc1PIXgb4ymeB2w=",
+      "version": "4.17.3",
+      "resolved": "https://registry.npmjs.org/express/-/express-4.17.3.tgz",
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       "requires": {
-        "accepts": "1.3.4",
+        "accepts": "~1.3.8",
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-        "body-parser": "1.18.2",
-        "content-disposition": "0.5.2",
-        "content-type": "1.0.4",
-        "cookie": "0.3.1",
+        "body-parser": "1.19.2",
+        "content-disposition": "0.5.4",
+        "content-type": "~1.0.4",
+        "cookie": "0.4.2",
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-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "etag": "1.8.1",
-        "finalhandler": "1.1.0",
+        "depd": "~1.1.2",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
+        "finalhandler": "~1.1.2",
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-        "methods": "1.1.2",
-        "on-finished": "2.3.0",
-        "parseurl": "1.3.2",
+        "methods": "~1.1.2",
+        "on-finished": "~2.3.0",
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-        "serve-static": "1.13.1",
-        "setprototypeof": "1.1.0",
-        "statuses": "1.3.1",
-        "type-is": "1.6.15",
+        "proxy-addr": "~2.0.7",
+        "qs": "6.9.7",
+        "range-parser": "~1.2.1",
+        "safe-buffer": "5.2.1",
+        "send": "0.17.2",
+        "serve-static": "1.14.2",
+        "setprototypeof": "1.2.0",
+        "statuses": "~1.5.0",
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+            "content-type": "~1.0.4",
+            "debug": "2.6.9",
+            "depd": "~1.1.2",
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+            "on-finished": "~2.3.0",
+            "qs": "6.9.7",
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+          "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
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@@ -2978,10 +3031,88 @@
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+          "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.8.1.tgz",
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+          "requires": {
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+            "inherits": "2.0.4",
+            "setprototypeof": "1.2.0",
+            "statuses": ">= 1.5.0 < 2",
+            "toidentifier": "1.0.1"
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
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+          "requires": {
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+          "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
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+            "http-errors": "1.8.1",
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+          "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
+          "integrity": "sha512-OpZ3zP+jT1PI7I8nemJX4AKmAX070ZkYPVWV/AaKTJl+tXCTGyVdC1a4SL8RUQYEwk/f34ZX8UTykN68FwrqAA=="
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+          "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
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+          "requires": {
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@@ -2991,6 +3122,10 @@
       "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
       "dev": true
     },
+    "extensions": {
+      "version": "git://github.com/edsilv/extensions.git#d89cc2d73827e1cab11c9071599c837ebe6c58d6",
+      "from": "git://github.com/edsilv/extensions.git#d89cc2d73827e1cab11c9071599c837ebe6c58d6"
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@@ -3099,17 +3234,17 @@
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-      "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.0.tgz",
-      "integrity": "sha1-zgtoVbRYU+eRsvzGgARtiCU91/U=",
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
+      "integrity": "sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==",
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-        "on-finished": "2.3.0",
-        "parseurl": "1.3.2",
-        "statuses": "1.3.1",
-        "unpipe": "1.0.0"
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.3",
+        "statuses": "~1.5.0",
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@@ -3119,6 +3254,16 @@
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+        },
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-        "escape-html": "1.0.3",
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-        "send": "0.16.1"
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+      "integrity": "sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4=",
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@@ -8553,11 +8802,6 @@
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@@ -8569,6 +8813,11 @@
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@@ -8727,6 +8976,11 @@
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diff --git a/package.json b/package.json
index 88a88d0..7a6ace4 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
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