diff --git a/package-lock.json b/package-lock.json
index 514f537..f0aa516 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,34 +5,34 @@
   "requires": true,
   "dependencies": {
     "@babel/code-frame": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.14.5.tgz",
-      "integrity": "sha512-9pzDqyc6OLDaqe+zbACgFkb6fKMNG6CObKpnYXChRsvYGyEdc7CA2BaqeOM+vOtCS5ndmJicPJhKAwYRI6UfFw==",
+      "version": "7.12.13",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.12.13.tgz",
+      "integrity": "sha512-HV1Cm0Q3ZrpCR93tkWOYiuYIgLxZXZFVG2VgK+MBWjUqZTundupbfx2aXarXuw5Ko5aMcjtJgbSs4vUGBS5v6g==",
       "requires": {
-        "@babel/highlight": "^7.14.5"
+        "@babel/highlight": "^7.12.13"
       }
     },
     "@babel/helper-validator-identifier": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.5.tgz",
-      "integrity": "sha512-5lsetuxCLilmVGyiLEfoHBRX8UCFD+1m2x3Rj97WrW3V7H3u4RWRXA4evMjImCsin2J2YT0QaVDGf+z8ondbAg=="
+      "version": "7.14.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.0.tgz",
+      "integrity": "sha512-V3ts7zMSu5lfiwWDVWzRDGIN+lnCEUdaXgtVHJgLb1rGaA6jMrtB9EmE7L18foXJIE8Un/A/h6NJfGQp/e1J4A=="
     },
     "@babel/highlight": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.14.5.tgz",
-      "integrity": "sha512-qf9u2WFWVV0MppaL877j2dBtQIDgmidgjGk5VIMw3OadXvYaXn66U1BFlH2t4+t3i+8PhedppRv+i40ABzd+gg==",
+      "version": "7.14.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.14.0.tgz",
+      "integrity": "sha512-YSCOwxvTYEIMSGaBQb5kDDsCopDdiUGsqpatp3fOlI4+2HQSkTmEVWnVuySdAC5EWCqSWWTv0ib63RjR7dTBdg==",
       "requires": {
-        "@babel/helper-validator-identifier": "^7.14.5",
+        "@babel/helper-validator-identifier": "^7.14.0",
         "chalk": "^2.0.0",
         "js-tokens": "^4.0.0"
       }
     },
     "@marp-team/marp-cli": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/@marp-team/marp-cli/-/marp-cli-1.1.1.tgz",
-      "integrity": "sha512-yplKcxxSklFsCiCCRn4wyee3Ai0AxqCi1kQ2f52Y6SAxEWRjO8yvFKDCHu2P4Z/B6fzTnRfOY2IV5o8UsHcvow==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@marp-team/marp-cli/-/marp-cli-1.0.3.tgz",
+      "integrity": "sha512-9s9VeW1Iknj7eqWoaHyUTXVxZzDY1vFvJ5g9gVBwMAjYpR0qb8csgRVtxtuDKVaJ6Sn/jHsZ43qX9mp3rlwN0w==",
       "requires": {
-        "@marp-team/marp-core": "^2.0.3",
+        "@marp-team/marp-core": "^2.0.2",
         "@marp-team/marpit": "^2.0.1",
         "chokidar": "^3.5.1",
         "chrome-launcher": "^0.13.4",
@@ -40,7 +40,7 @@
         "express": "^4.17.1",
         "globby": "^11.0.3",
         "import-from": "^3.0.0",
-        "pptxgenjs": "^3.6.0",
+        "pptxgenjs": "^3.5.0",
         "puppeteer-core": "9.1.1",
         "serve-index": "^1.9.1",
         "tmp": "^0.2.1",
@@ -89,42 +89,42 @@
       "integrity": "sha512-dSZLyPNzBY+lrcIPF1dC9dcYcU3MPFigtjQDxLZP48uWq5oaMSnPLGtDsiDjlqVHk6MAmMuw7qy1i4+tt9HhpA=="
     },
     "@nodelib/fs.scandir": {
-      "version": "2.1.5",
-      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
-      "integrity": "sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==",
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.4.tgz",
+      "integrity": "sha512-33g3pMJk3bg5nXbL/+CY6I2eJDzZAni49PfJnL5fghPTggPvBd/pFNSgJsdAgWptuFu7qq/ERvOYFlhvsLTCKA==",
       "requires": {
-        "@nodelib/fs.stat": "2.0.5",
+        "@nodelib/fs.stat": "2.0.4",
         "run-parallel": "^1.1.9"
       }
     },
     "@nodelib/fs.stat": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz",
-      "integrity": "sha512-RkhPPp2zrqDAQA/2jNhnztcPAlv64XdhIp7a7454A5ovI7Bukxgt7MX7udwAu3zg1DcpPU0rz3VV1SeaqvY4+A=="
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.4.tgz",
+      "integrity": "sha512-IYlHJA0clt2+Vg7bccq+TzRdJvv19c2INqBSsoOLp1je7xjtr7J26+WXR72MCdvU9q1qTzIWDfhMf+DRvQJK4Q=="
     },
     "@nodelib/fs.walk": {
-      "version": "1.2.7",
-      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.7.tgz",
-      "integrity": "sha512-BTIhocbPBSrRmHxOAJFtR18oLhxTtAFDAvL8hY1S3iU8k+E60W/YFs4jrixGzQjMpF4qPXxIQHcjVD9dz1C2QA==",
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.6.tgz",
+      "integrity": "sha512-8Broas6vTtW4GIXTAHDoE32hnN2M5ykgCpWGbuXHQ15vEMqr23pB76e/GZcYsZCHALv50ktd24qhEyKr6wBtow==",
       "requires": {
-        "@nodelib/fs.scandir": "2.1.5",
+        "@nodelib/fs.scandir": "2.1.4",
         "fastq": "^1.6.0"
       }
     },
     "@types/minimist": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/@types/minimist/-/minimist-1.2.1.tgz",
-      "integrity": "sha512-fZQQafSREFyuZcdWFAExYjBiCL7AUCdgsk80iO0q4yihYYdcIiH28CcuPTGFgLOCC8RlW49GSQxdHwZP+I7CNg=="
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/@types/minimist/-/minimist-1.2.2.tgz",
+      "integrity": "sha512-jhuKLIRrhvCPLqwPcx6INqmKeiA5EWrsCOPhrlFSrbrmU4ZMPjj5Ul/oLCMDO98XRUIwVm78xICz4EPCektzeQ=="
     },
     "@types/node": {
-      "version": "15.12.5",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-15.12.5.tgz",
-      "integrity": "sha512-se3yX7UHv5Bscf8f1ERKvQOD6sTyycH3hdaoozvaLxgUiY5lIGEeH37AD0G0Qi9kPqihPn0HOfd2yaIEN9VwEg=="
+      "version": "15.0.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-15.0.2.tgz",
+      "integrity": "sha512-p68+a+KoxpoB47015IeYZYRrdqMUcpbK8re/zpFB8Ld46LHC1lPEbp3EXgkEhAYEcPvjJF6ZO+869SQ0aH1dcA=="
     },
     "@types/normalize-package-data": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/@types/normalize-package-data/-/normalize-package-data-2.4.0.tgz",
-      "integrity": "sha512-f5j5b/Gf71L+dbqxIpQ4Z2WlmI/mPJ0fOkGGmFgtb6sAu97EPczzbS3/tJKxmcYDj55OX6ssqwDAWOHIYDRDGA=="
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/@types/normalize-package-data/-/normalize-package-data-2.4.1.tgz",
+      "integrity": "sha512-Gj7cI7z+98M282Tqmp2K5EIsoouUEzbBJhQQzDE3jSIRk6r9gsz0oUokqIUR4u1R3dMHo0pDHM7sNOHyhulypw=="
     },
     "@types/parse-json": {
       "version": "4.0.0",
@@ -169,6 +169,11 @@
           "requires": {
             "ms": "2.1.2"
           }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         }
       }
     },
@@ -194,9 +199,9 @@
       "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU="
     },
     "ansi-regex": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
-      "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg=="
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.0.1.tgz",
+      "integrity": "sha512-n5M855fKb2SsfMIiFFoVrABHJC8QtHwVx+mHWP3QcEqBHYienj5dHSgjbxtC0WEZXYt4wcD6zrQElDPhFuZgfA=="
     },
     "ansi-styles": {
       "version": "3.2.1",
@@ -438,18 +443,18 @@
       }
     },
     "chokidar": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.5.2.tgz",
-      "integrity": "sha512-ekGhOnNVPgT77r4K/U3GDhu+FQ2S8TnK/s2KbIGXi0SZWuwkZ2QNyfWdZW+TVfn84DpEP7rLeCt2UI6bJ8GwbQ==",
+      "version": "3.5.1",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.5.1.tgz",
+      "integrity": "sha512-9+s+Od+W0VJJzawDma/gvBNQqkTiqYTWLuZoyAsivsI4AaWTCzHG06/TMjsf1cYe9Cb97UCEhjz7HvnPk2p/tw==",
       "requires": {
-        "anymatch": "~3.1.2",
+        "anymatch": "~3.1.1",
         "braces": "~3.0.2",
-        "fsevents": "~2.3.2",
-        "glob-parent": "~5.1.2",
+        "fsevents": "~2.3.1",
+        "glob-parent": "~5.1.0",
         "is-binary-path": "~2.1.0",
         "is-glob": "~4.0.1",
         "normalize-path": "~3.0.0",
-        "readdirp": "~3.6.0"
+        "readdirp": "~3.5.0"
       }
     },
     "chownr": {
@@ -621,13 +626,6 @@
       "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
       "requires": {
         "ms": "2.0.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
-        }
       }
     },
     "decamelize": {
@@ -772,9 +770,9 @@
       "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
     },
     "eventemitter3": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.0.tgz",
-      "integrity": "sha512-qerSRB0p+UDEssxTtm6EDKcE7W4OaoisfIMl4CngyEhjpYglocpNg6UEqCvemdGhosAsg4sO2dXJOdyBifPGCg=="
+      "version": "4.0.7",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.7.tgz",
+      "integrity": "sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw=="
     },
     "express": {
       "version": "4.17.1",
@@ -836,6 +834,11 @@
           "requires": {
             "ms": "2.1.2"
           }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         }
       }
     },
@@ -850,15 +853,16 @@
       "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="
     },
     "fast-glob": {
-      "version": "3.2.6",
-      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.2.6.tgz",
-      "integrity": "sha512-GnLuqj/pvQ7pX8/L4J84nijv6sAnlwvSDpMkJi9i7nPmPxGtRPkBSStfvDW5l6nMdX9VWe+pkKWFTgD+vF2QSQ==",
+      "version": "3.2.5",
+      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.2.5.tgz",
+      "integrity": "sha512-2DtFcgT68wiTTiwZ2hNdJfcHNke9XOfnwmBRWXhmeKM8rF0TGwmC/Qto3S7RoZKp5cilZbxzO5iTNTQsJ+EeDg==",
       "requires": {
         "@nodelib/fs.stat": "^2.0.2",
         "@nodelib/fs.walk": "^1.2.3",
-        "glob-parent": "^5.1.2",
+        "glob-parent": "^5.1.0",
         "merge2": "^1.3.0",
-        "micromatch": "^4.0.4"
+        "micromatch": "^4.0.2",
+        "picomatch": "^2.2.1"
       }
     },
     "fast-json-stable-stringify": {
@@ -914,22 +918,9 @@
       }
     },
     "follow-redirects": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.10.0.tgz",
-      "integrity": "sha512-4eyLK6s6lH32nOvLLwlIOnr9zrL8Sm+OvW4pVTJNoXeGzYIkHVf+pADQi+OJ0E67hiuSLezPVPyBcIZO50TmmQ==",
-      "requires": {
-        "debug": "^3.0.0"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "3.2.6",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
-          "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
-          "requires": {
-            "ms": "^2.1.1"
-          }
-        }
-      }
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.14.1.tgz",
+      "integrity": "sha512-HWqDgT7ZEkqRzBvc2s64vSZ/hfOceEol3ac/7tKwzuvEyWx3/4UegXh5oBOIotkGsObyk3xznnSRVADBgWSQVg=="
     },
     "foreman": {
       "version": "3.0.1",
@@ -958,9 +949,9 @@
       }
     },
     "forwarded": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.2.0.tgz",
-      "integrity": "sha512-buRG0fpBtRHSTCOASe6hD258tEubFoRLb4ZNA6NxMVHNw2gOcwHo9wyablzMzOA5z9xA9L1KNjk/Nt6MT9aYow=="
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
+      "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
     },
     "fresh": {
       "version": "0.5.2",
@@ -1120,9 +1111,9 @@
       }
     },
     "globby": {
-      "version": "11.0.4",
-      "resolved": "https://registry.npmjs.org/globby/-/globby-11.0.4.tgz",
-      "integrity": "sha512-9O4MVG9ioZJ08ffbcyVYyLOJLk5JQ688pJ4eMGLpdWLHq/Wr1D9BlriLQyL0E+jbkuePVZXYFj47QM/v093wHg==",
+      "version": "11.0.3",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-11.0.3.tgz",
+      "integrity": "sha512-ffdmosjA807y7+lA1NM0jELARVmYul/715xiILEjo3hBLPTcirgQNnXECn5g3mtR8TOLCVbkfua1Hpen25/Xcg==",
       "requires": {
         "array-union": "^2.1.0",
         "dir-glob": "^3.0.1",
@@ -1272,6 +1263,11 @@
           "requires": {
             "ms": "2.1.2"
           }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         }
       }
     },
@@ -1699,16 +1695,16 @@
       "integrity": "sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg=="
     },
     "mime-db": {
-      "version": "1.48.0",
-      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.48.0.tgz",
-      "integrity": "sha512-FM3QwxV+TnZYQ2aRqhlKBMHxk10lTbMt3bBkMAp54ddrNeVSfcQYOOKuGuy3Ddrm38I04If834fOUSq1yzslJQ=="
+      "version": "1.47.0",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.47.0.tgz",
+      "integrity": "sha512-QBmA/G2y+IfeS4oktet3qRZ+P5kPhCKRXxXnQEudYqUaEioAU1/Lq2us3D/t1Jfo4hE9REQPrbB7K5sOczJVIw=="
     },
     "mime-types": {
-      "version": "2.1.31",
-      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.31.tgz",
-      "integrity": "sha512-XGZnNzm3QvgKxa8dpzyhFTHmpP3l5YNusmne07VUOXxou9CqUqYa/HBy124RqtVh/O2pECas/MOcsDgpilPOPg==",
+      "version": "2.1.30",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.30.tgz",
+      "integrity": "sha512-crmjA4bLtR8m9qLpHvgxSChT+XoSlZi8J4n/aIdn3z92e/U47Z0V/yl+Wh9W046GgFVAmoNR/fmdbZYcSSIUeg==",
       "requires": {
-        "mime-db": "1.48.0"
+        "mime-db": "1.47.0"
       }
     },
     "min-indent": {
@@ -1775,9 +1771,9 @@
       "integrity": "sha512-gKLcREMhtuZRwRAfqP3RFW+TK4JqApVBtOIftVgjuABpAtpxhPGaDcfvbhNvD0B8iD1oUr/txX35NjcaY6Ns/A=="
     },
     "ms": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
     },
     "mustache": {
       "version": "2.3.2",
@@ -2017,9 +2013,9 @@
       "integrity": "sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q=="
     },
     "path-parse": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
-      "integrity": "sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw=="
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
+      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw=="
     },
     "path-to-regexp": {
       "version": "0.1.7",
@@ -2042,9 +2038,9 @@
       "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
     },
     "picomatch": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.0.tgz",
-      "integrity": "sha512-lY1Q/PiJGC2zOv/z391WOTD+Z02bCgsFfvxoXXf6h7kv9o+WmsmzYqrAwY63sNgOxE4xEdq0WyUnXfKeBrSvYw=="
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.3.tgz",
+      "integrity": "sha512-KpELjfwcCDUb9PeigTs2mBJzXUPzAuP2oPcA989He8Rte0+YUAjw1JVedDhuTKPkHjSYzMN3npC9luThGYEKdg=="
     },
     "pkg-dir": {
       "version": "4.2.0",
@@ -2119,9 +2115,9 @@
       },
       "dependencies": {
         "@types/node": {
-          "version": "14.17.4",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-14.17.4.tgz",
-          "integrity": "sha512-8kQ3+wKGRNN0ghtEn7EGps/B8CzuBz1nXZEIGGLP2GnwbqYn4dbTs7k+VKLTq1HvZLRCIDtN3Snx1Ege8B7L5A=="
+          "version": "14.14.44",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.44.tgz",
+          "integrity": "sha512-+gaugz6Oce6ZInfI/tK4Pq5wIIkJMEJUu92RB3Eu93mtj4wjjjz9EB5mLp5s1pSsLXdC/CPut/xF20ZzAQJbTA=="
         }
       }
     },
@@ -2136,11 +2132,11 @@
       "integrity": "sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA=="
     },
     "proxy-addr": {
-      "version": "2.0.7",
-      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
-      "integrity": "sha512-llQsMLSUDUPT44jdrU/O37qlnifitDP+ZwrmmZcoSKyLKvtZxpyV0n2/bD/N4tBAAZ/gJEdZU7KMraoK1+XYAg==",
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.6.tgz",
+      "integrity": "sha512-dh/frvCBVmSsDYzw6n926jv974gddhkFPfiN8hPOi30Wax25QZyZEGveluCgliBnqmuM+UJmBErbAUFIoDbjOw==",
       "requires": {
-        "forwarded": "0.2.0",
+        "forwarded": "~0.1.2",
         "ipaddr.js": "1.9.1"
       }
     },
@@ -2194,6 +2190,11 @@
           "requires": {
             "ms": "2.1.2"
           }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         }
       }
     },
@@ -2307,9 +2308,9 @@
       }
     },
     "readdirp": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
-      "integrity": "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==",
+      "version": "3.5.0",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.5.0.tgz",
+      "integrity": "sha512-cMhu7c/8rdhkHXWsY+osBhfSy0JikwpHK/5+imo+LpeasTF8ouErHrlYkwT0++njiyuDvc7OFY5T3ukvZ8qmFQ==",
       "requires": {
         "picomatch": "^2.2.1"
       }
@@ -2724,9 +2725,9 @@
       }
     },
     "spdx-license-ids": {
-      "version": "3.0.9",
-      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.9.tgz",
-      "integrity": "sha512-Ki212dKK4ogX+xDo4CtOZBVIwhsKBEfsEEcwmJfLQzirgc2jIWdzg40Unxz/HzEUqM1WFzVlQSMF9kZZ2HboLQ=="
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.7.tgz",
+      "integrity": "sha512-U+MTEOO0AiDzxwFvoa4JVnMV6mZlJKk2sBLt90s7G0Gd0Mlknc7kxEn3nuDPNZRta7O2uy8oLcZLVT+4sqNZHQ=="
     },
     "speech-rule-engine": {
       "version": "3.3.3",
@@ -2805,6 +2806,13 @@
       "integrity": "sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==",
       "requires": {
         "ansi-regex": "^5.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
+          "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg=="
+        }
       }
     },
     "strip-indent": {
@@ -2824,9 +2832,9 @@
       }
     },
     "tar": {
-      "version": "6.1.11",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-6.1.11.tgz",
-      "integrity": "sha512-an/KZQzQUkZCkuoAA64hM92X0Urb6VpRhAFllDzz44U2mcD5scmT3zBc4VgVpkugF580+DQn8eAFSyoQt0tznA==",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-6.1.0.tgz",
+      "integrity": "sha512-DUCttfhsnLCjwoDoFcI+B2iJgYa93vBnDUATYEeRx6sntCTdN01VnqsIuTlALXla/LWooNg0yEGeB+Y8WdFxGA==",
       "requires": {
         "chownr": "^2.0.0",
         "fs-minipass": "^2.0.0",
@@ -2919,9 +2927,9 @@
       }
     },
     "trim-newlines": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-3.0.1.tgz",
-      "integrity": "sha512-c1PTsA3tYrIsLGkJkzHF+w9F2EyxfXGo4UyJc4pFL++FMjnq0HJS69T3M7d//gKrFKwy429bouPescbjecU+Zw=="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-3.0.0.tgz",
+      "integrity": "sha512-C4+gOpvmxaSMKuEf9Qc134F1ZuOHVXKRbtEflf4NTtuuJDEIJ9p5PXsalL8SkeRw+qit1Mo+yuvMPAKwWg/1hA=="
     },
     "true-case-path": {
       "version": "1.0.3",
@@ -3144,9 +3152,9 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "ws": {
-      "version": "7.5.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.0.tgz",
-      "integrity": "sha512-6ezXvzOZupqKj4jUqbQ9tXuJNo+BR2gU8fFRk3XCP3e0G6WT414u5ELe6Y0vtp7kmSJ3F7YWObSNr1ESsgi4vw=="
+      "version": "7.5.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.6.tgz",
+      "integrity": "sha512-6GLgCqo2cy2A2rjCNFlxQS6ZljG/coZfZXclldI8FB/1G3CCI36Zd8xy2HrFVACi8tfk5XrgLQEk+P0Tnz9UcA=="
     },
     "xmldom-sre": {
       "version": "0.1.31",
diff --git a/package.json b/package.json
index af75519..0c23a2a 100644
--- a/package.json
+++ b/package.json
@@ -13,10 +13,9 @@
   "license": "ISC",
   "dependencies": {
     "@marp-team/marp-cli": "^1.0.3",
+    "ansi-regex": "^6.0.1",
     "foreman": "^3.0.1",
-    "node-sass": "^6.0.0",
-    "json-schema": ">=0.4.0",
-    "ansi-regex": ">=5.0.1"
+    "node-sass": "^6.0.1"
   },
   "devDependencies": {
     "@marp-team/marp-core": "^2.0.2",