diff --git a/package-lock.json b/package-lock.json
index cd1d373..768d8bd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,13 +1,17 @@
 {
   "name": "joplin-plugin-event-calendar",
-  "version": "1.0.0",
+  "version": "0.1.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "joplin-plugin-event-calendar",
-      "version": "1.0.0",
+      "version": "0.1.0",
       "license": "MIT",
+      "dependencies": {
+        "date-fns": "^2.28.0",
+        "yaml": "^1.10.2"
+      },
       "devDependencies": {
         "@types/jest": "^27.4.1",
         "@types/node": "^14.0.14",
@@ -17,6 +21,7 @@
         "glob": "^7.1.6",
         "jest": "^27.5.1",
         "on-build-webpack": "^0.1.0",
+        "prettier": "^2.5.1",
         "tar": "^6.0.5",
         "ts-jest": "^27.1.3",
         "ts-loader": "^7.0.5",
@@ -2749,6 +2754,18 @@
         "node": ">=10"
       }
     },
+    "node_modules/date-fns": {
+      "version": "2.28.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-2.28.0.tgz",
+      "integrity": "sha512-8d35hViGYx/QH0icHYCeLmsLmMUheMmTyV9Fcm6gvNwdw31yXXH+O85sOBJ+OLnLQMKZowvpKb6FgMIQjcpvQw==",
+      "engines": {
+        "node": ">=0.11"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/date-fns"
+      }
+    },
     "node_modules/debug": {
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -6594,6 +6611,18 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/prettier": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.5.1.tgz",
+      "integrity": "sha512-vBZcPRUR5MZJwoyi3ZoyQlc1rXeEck8KgeC9AwwOn+exuxLxq5toTRDTSaVrXHxelDMHy9zlicw8u66yxoSUFg==",
+      "dev": true,
+      "bin": {
+        "prettier": "bin-prettier.js"
+      },
+      "engines": {
+        "node": ">=10.13.0"
+      }
+    },
     "node_modules/pretty-format": {
       "version": "27.5.1",
       "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-27.5.1.tgz",
@@ -9770,6 +9799,14 @@
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       "dev": true
     },
+    "node_modules/yaml": {
+      "version": "1.10.2",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.2.tgz",
+      "integrity": "sha512-r3vXyErRCYJ7wg28yvBY5VSoAF8ZvlcW9/BwUzEtUsjvX/DKs24dIkuwjtuprwJJHsbyUbLApepYTR1BN4uHrg==",
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/yargs": {
       "version": "16.2.0",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-16.2.0.tgz",
@@ -12066,6 +12103,11 @@
         "whatwg-url": "^8.0.0"
       }
     },
+    "date-fns": {
+      "version": "2.28.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-2.28.0.tgz",
+      "integrity": "sha512-8d35hViGYx/QH0icHYCeLmsLmMUheMmTyV9Fcm6gvNwdw31yXXH+O85sOBJ+OLnLQMKZowvpKb6FgMIQjcpvQw=="
+    },
     "debug": {
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -15084,6 +15126,12 @@
       "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
       "dev": true
     },
+    "prettier": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.5.1.tgz",
+      "integrity": "sha512-vBZcPRUR5MZJwoyi3ZoyQlc1rXeEck8KgeC9AwwOn+exuxLxq5toTRDTSaVrXHxelDMHy9zlicw8u66yxoSUFg==",
+      "dev": true
+    },
     "pretty-format": {
       "version": "27.5.1",
       "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-27.5.1.tgz",
@@ -17613,6 +17661,11 @@
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       "dev": true
     },
+    "yaml": {
+      "version": "1.10.2",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.2.tgz",
+      "integrity": "sha512-r3vXyErRCYJ7wg28yvBY5VSoAF8ZvlcW9/BwUzEtUsjvX/DKs24dIkuwjtuprwJJHsbyUbLApepYTR1BN4uHrg=="
+    },
     "yargs": {
       "version": "16.2.0",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-16.2.0.tgz",