diff --git a/demo/package-lock.json b/demo/package-lock.json
index 944f7f9..dccafc7 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -374,9 +374,7 @@
             },
             "chownr": {
               "version": "1.1.4",
-              "bundled": true,
-              "dev": true,
-              "optional": true
+              "bundled": true
             },
             "code-point-at": {
               "version": "1.1.0",
@@ -432,8 +430,6 @@
             "fs-minipass": {
               "version": "1.2.7",
               "bundled": true,
-              "dev": true,
-              "optional": true,
               "requires": {
                 "minipass": "^2.6.0"
               }
@@ -553,7 +549,6 @@
             "minipass": {
               "version": "2.9.0",
               "bundled": true,
-              "dev": true,
               "optional": true,
               "requires": {
                 "safe-buffer": "^5.1.2",
@@ -563,8 +558,6 @@
             "minizlib": {
               "version": "1.3.3",
               "bundled": true,
-              "dev": true,
-              "optional": true,
               "requires": {
                 "minipass": "^2.9.0"
               }
@@ -755,7 +748,6 @@
             "safe-buffer": {
               "version": "5.1.2",
               "bundled": true,
-              "dev": true,
               "optional": true
             },
             "safer-buffer": {
@@ -823,21 +815,6 @@
               "dev": true,
               "optional": true
             },
-            "tar": {
-              "version": "4.4.13",
-              "bundled": true,
-              "dev": true,
-              "optional": true,
-              "requires": {
-                "chownr": "^1.1.1",
-                "fs-minipass": "^1.2.5",
-                "minipass": "^2.8.6",
-                "minizlib": "^1.2.1",
-                "mkdirp": "^0.5.0",
-                "safe-buffer": "^5.1.2",
-                "yallist": "^3.0.3"
-              }
-            },
             "util-deprecate": {
               "version": "1.0.2",
               "bundled": true,
@@ -862,7 +839,6 @@
             "yallist": {
               "version": "3.1.1",
               "bundled": true,
-              "dev": true,
               "optional": true
             }
           }
@@ -6681,9 +6657,7 @@
             },
             "chownr": {
               "version": "1.1.4",
-              "bundled": true,
-              "dev": true,
-              "optional": true
+              "bundled": true
             },
             "code-point-at": {
               "version": "1.1.0",
@@ -6739,8 +6713,6 @@
             "fs-minipass": {
               "version": "1.2.7",
               "bundled": true,
-              "dev": true,
-              "optional": true,
               "requires": {
                 "minipass": "^2.6.0"
               }
@@ -6860,7 +6832,6 @@
             "minipass": {
               "version": "2.9.0",
               "bundled": true,
-              "dev": true,
               "optional": true,
               "requires": {
                 "safe-buffer": "^5.1.2",
@@ -6870,8 +6841,6 @@
             "minizlib": {
               "version": "1.3.3",
               "bundled": true,
-              "dev": true,
-              "optional": true,
               "requires": {
                 "minipass": "^2.9.0"
               }
@@ -7062,7 +7031,6 @@
             "safe-buffer": {
               "version": "5.1.2",
               "bundled": true,
-              "dev": true,
               "optional": true
             },
             "safer-buffer": {
@@ -7130,21 +7098,6 @@
               "dev": true,
               "optional": true
             },
-            "tar": {
-              "version": "4.4.13",
-              "bundled": true,
-              "dev": true,
-              "optional": true,
-              "requires": {
-                "chownr": "^1.1.1",
-                "fs-minipass": "^1.2.5",
-                "minipass": "^2.8.6",
-                "minizlib": "^1.2.1",
-                "mkdirp": "^0.5.0",
-                "safe-buffer": "^5.1.2",
-                "yallist": "^3.0.3"
-              }
-            },
             "util-deprecate": {
               "version": "1.0.2",
               "bundled": true,
@@ -7169,7 +7122,6 @@
             "yallist": {
               "version": "3.1.1",
               "bundled": true,
-              "dev": true,
               "optional": true
             }
           }
@@ -10784,9 +10736,9 @@
       "dev": true
     },
     "tar": {
-      "version": "4.4.13",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz",
-      "integrity": "sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==",
+      "version": "4.4.15",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-4.4.15.tgz",
+      "integrity": "sha512-ItbufpujXkry7bHH9NpQyTXPbJ72iTlXgkBAYsAjDXk3Ds8t/3NfO5P4xZGy7u+sYuQUbimgzswX4uQIEeNVOA==",
       "dev": true,
       "requires": {
         "chownr": "^1.1.1",
@@ -11548,9 +11500,7 @@
             },
             "chownr": {
               "version": "1.1.4",
-              "bundled": true,
-              "dev": true,
-              "optional": true
+              "bundled": true
             },
             "code-point-at": {
               "version": "1.1.0",
@@ -11606,8 +11556,6 @@
             "fs-minipass": {
               "version": "1.2.7",
               "bundled": true,
-              "dev": true,
-              "optional": true,
               "requires": {
                 "minipass": "^2.6.0"
               }
@@ -11727,7 +11675,6 @@
             "minipass": {
               "version": "2.9.0",
               "bundled": true,
-              "dev": true,
               "optional": true,
               "requires": {
                 "safe-buffer": "^5.1.2",
@@ -11737,8 +11684,6 @@
             "minizlib": {
               "version": "1.3.3",
               "bundled": true,
-              "dev": true,
-              "optional": true,
               "requires": {
                 "minipass": "^2.9.0"
               }
@@ -11929,7 +11874,6 @@
             "safe-buffer": {
               "version": "5.1.2",
               "bundled": true,
-              "dev": true,
               "optional": true
             },
             "safer-buffer": {
@@ -11997,21 +11941,6 @@
               "dev": true,
               "optional": true
             },
-            "tar": {
-              "version": "4.4.13",
-              "bundled": true,
-              "dev": true,
-              "optional": true,
-              "requires": {
-                "chownr": "^1.1.1",
-                "fs-minipass": "^1.2.5",
-                "minipass": "^2.8.6",
-                "minizlib": "^1.2.1",
-                "mkdirp": "^0.5.0",
-                "safe-buffer": "^5.1.2",
-                "yallist": "^3.0.3"
-              }
-            },
             "util-deprecate": {
               "version": "1.0.2",
               "bundled": true,
@@ -12036,7 +11965,6 @@
             "yallist": {
               "version": "3.1.1",
               "bundled": true,
-              "dev": true,
               "optional": true
             }
           }
@@ -12372,9 +12300,7 @@
             },
             "chownr": {
               "version": "1.1.4",
-              "bundled": true,
-              "dev": true,
-              "optional": true
+              "bundled": true
             },
             "code-point-at": {
               "version": "1.1.0",
@@ -12430,8 +12356,6 @@
             "fs-minipass": {
               "version": "1.2.7",
               "bundled": true,
-              "dev": true,
-              "optional": true,
               "requires": {
                 "minipass": "^2.6.0"
               }
@@ -12551,7 +12475,6 @@
             "minipass": {
               "version": "2.9.0",
               "bundled": true,
-              "dev": true,
               "optional": true,
               "requires": {
                 "safe-buffer": "^5.1.2",
@@ -12561,8 +12484,6 @@
             "minizlib": {
               "version": "1.3.3",
               "bundled": true,
-              "dev": true,
-              "optional": true,
               "requires": {
                 "minipass": "^2.9.0"
               }
@@ -12753,7 +12674,6 @@
             "safe-buffer": {
               "version": "5.1.2",
               "bundled": true,
-              "dev": true,
               "optional": true
             },
             "safer-buffer": {
@@ -12821,21 +12741,6 @@
               "dev": true,
               "optional": true
             },
-            "tar": {
-              "version": "4.4.13",
-              "bundled": true,
-              "dev": true,
-              "optional": true,
-              "requires": {
-                "chownr": "^1.1.1",
-                "fs-minipass": "^1.2.5",
-                "minipass": "^2.8.6",
-                "minizlib": "^1.2.1",
-                "mkdirp": "^0.5.0",
-                "safe-buffer": "^5.1.2",
-                "yallist": "^3.0.3"
-              }
-            },
             "util-deprecate": {
               "version": "1.0.2",
               "bundled": true,
@@ -12860,7 +12765,6 @@
             "yallist": {
               "version": "3.1.1",
               "bundled": true,
-              "dev": true,
               "optional": true
             }
           }