diff --git a/package-lock.json b/package-lock.json
index d069904..e927875 100644
--- a/package-lock.json
+++ b/package-lock.json
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-        "d3-drag": "1",
-        "d3-interpolate": "1",
-        "d3-selection": "1",
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       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
@@ -3166,7 +2828,8 @@
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       "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -4199,7 +3862,8 @@
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           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4242,7 +3906,8 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4253,7 +3918,8 @@
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4370,7 +4036,8 @@
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           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4382,6 +4049,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4404,12 +4072,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4428,6 +4098,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -4508,7 +4179,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4520,6 +4192,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4605,7 +4278,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4641,6 +4315,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4660,6 +4335,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4703,12 +4379,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4717,6 +4395,7 @@
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       "dev": true,
+      "optional": true,
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@@ -4729,6 +4408,7 @@
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       "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
       "dev": true,
+      "optional": true,
       "requires": {
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         "console-control-strings": "^1.0.0",
@@ -4766,7 +4446,8 @@
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       "integrity": "sha1-uWjGsKBDhDJJAui/Gl3zJXmkUP4=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -4951,7 +4632,8 @@
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       "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
       "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -5172,6 +4854,7 @@
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+      "dev": true,
       "requires": {
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@@ -5681,7 +5364,8 @@
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       "integrity": "sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -6389,6 +6073,7 @@
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       "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
       "dev": true,
+      "optional": true,
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@@ -6401,7 +6086,8 @@
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           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -6676,7 +6362,8 @@
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       "integrity": "sha1-2TPOuSBdgr3PSIb2dCvcK03qFG0=",
-      "dev": true
+      "dev": true,
+      "optional": true
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     "map-visit": {
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@@ -7312,6 +6999,7 @@
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       "dev": true,
+      "optional": true,
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@@ -8344,6 +8032,7 @@
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       "integrity": "sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -8355,6 +8044,7 @@
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           "integrity": "sha1-WcRPfuSR2nBNpBXaWkBwuk+P5EE=",
           "dev": true,
+          "optional": true,
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@@ -8365,7 +8055,8 @@
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           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -8374,6 +8065,7 @@
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       "integrity": "sha1-nWPBMnbAZZGNV/ACpX9AobZD+wI=",
       "dev": true,
+      "optional": true,
       "requires": {
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         "read-pkg": "^1.0.0"
@@ -8384,6 +8076,7 @@
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           "integrity": "sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=",
           "dev": true,
+          "optional": true,
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             "path-exists": "^2.0.0",
             "pinkie-promise": "^2.0.0"
@@ -8394,6 +8087,7 @@
           "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-2.1.0.tgz",
           "integrity": "sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=",
           "dev": true,
+          "optional": true,
           "requires": {
             "pinkie-promise": "^2.0.0"
           }
@@ -8673,11 +8367,6 @@
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-    "rw": {
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-      "resolved": "https://registry.npmjs.org/rw/-/rw-1.3.3.tgz",
-      "integrity": "sha1-P4Yt+pGrdmsUiF700BEkv9oHT7Q="
-    },
     "rxjs": {
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       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.3.3.tgz",
@@ -8704,7 +8393,8 @@
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-      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+      "dev": true
     },
     "sass-graph": {
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@@ -9722,6 +9412,7 @@
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       "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
       "dev": true,
+      "optional": true,
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       }
@@ -11088,6 +10779,7 @@
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       "dev": true,
+      "optional": true,
       "requires": {
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       }
@@ -11158,11 +10850,6 @@
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       "dev": true
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-      "resolved": "https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz",
-      "integrity": "sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw="
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diff --git a/package.json b/package.json
index ed3252d..6a8ca8e 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "@angular/animations": "~7.2.0",
     "@angular/common": "~7.2.0",
     "@angular/compiler": "~7.2.0",
-    "@angular/core": "~7.2.0",
+    "@angular/core": "~11.0.5",
     "@angular/forms": "~7.2.0",
     "@angular/platform-browser": "~7.2.0",
     "@angular/platform-browser-dynamic": "~7.2.0",