diff --git a/package-lock.json b/package-lock.json
index 12cb9a5..d3ed2d2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -187,11 +187,18 @@
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+      "optional": true,
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         "are-we-there-yet": "~1.1.2",
         "console-control-strings": "~1.1.0",
@@ -6239,7 +6400,8 @@
       "version": "0.8.2",
       "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.8.2.tgz",
       "integrity": "sha1-Rqarfwrq2N6unsBWV4C31O/rnUM=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "object-assign": {
       "version": "4.1.1",
@@ -9208,6 +9370,11 @@
         "symbol-observable": "1.0.1"
       }
     },
+    "rxjs-compat": {
+      "version": "6.6.7",
+      "resolved": "https://registry.npmjs.org/rxjs-compat/-/rxjs-compat-6.6.7.tgz",
+      "integrity": "sha512-szN4fK+TqBPOFBcBcsR0g2cmTTUF/vaFEOZNuSdfU8/pGFnNmmn2u8SystYXG1QMrjOPBc6XTKHMVfENDf6hHw=="
+    },
     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
@@ -9227,7 +9394,8 @@
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "sass-graph": {
       "version": "2.2.4",
@@ -9789,6 +9957,7 @@
       "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.14.2.tgz",
       "integrity": "sha1-xvxhZIo9nE52T9P8306hBeSSupg=",
       "dev": true,
+      "optional": true,
       "requires": {
         "asn1": "~0.2.3",
         "assert-plus": "^1.0.0",
@@ -9805,7 +9974,8 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
           "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -10212,6 +10382,7 @@
       "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.4.tgz",
       "integrity": "sha512-TZ6TTfI5NtZnuyy/Kecv+CnoROnyXn2DN97LontgQpCwsX2XyLYCC0ENhYkehSOwAp8rTQKc/NUIF7BkQ5rKLA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "punycode": "^1.4.1"
       },
@@ -10220,7 +10391,8 @@
           "version": "1.4.1",
           "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
           "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -10374,6 +10546,7 @@
       "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
       "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
       "dev": true,
+      "optional": true,
       "requires": {
         "safe-buffer": "^5.0.1"
       }
@@ -10787,6 +10960,7 @@
       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
       "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
       "dev": true,
+      "optional": true,
       "requires": {
         "assert-plus": "^1.0.0",
         "core-util-is": "1.0.2",
@@ -10797,7 +10971,8 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
           "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -11070,7 +11245,8 @@
             "ansi-regex": {
               "version": "2.1.1",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "aproba": {
               "version": "1.2.0",
@@ -11279,12 +11455,14 @@
             "minimist": {
               "version": "0.0.8",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "minipass": {
               "version": "2.2.4",
               "bundled": true,
               "dev": true,
+              "optional": true,
               "requires": {
                 "safe-buffer": "^5.1.1",
                 "yallist": "^3.0.0"
@@ -11303,6 +11481,7 @@
               "version": "0.5.1",
               "bundled": true,
               "dev": true,
+              "optional": true,
               "requires": {
                 "minimist": "0.0.8"
               }
@@ -11482,7 +11661,8 @@
             "safe-buffer": {
               "version": "5.1.1",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "safer-buffer": {
               "version": "2.1.2",
@@ -11538,6 +11718,7 @@
               "version": "3.0.1",
               "bundled": true,
               "dev": true,
+              "optional": true,
               "requires": {
                 "ansi-regex": "^2.0.0"
               }
@@ -11581,12 +11762,14 @@
             "wrappy": {
               "version": "1.0.2",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "yallist": {
               "version": "3.0.2",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             }
           }
         },
@@ -12339,7 +12522,8 @@
             "ansi-regex": {
               "version": "2.1.1",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "aproba": {
               "version": "1.2.0",
@@ -12754,7 +12938,8 @@
             "safe-buffer": {
               "version": "5.1.1",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "safer-buffer": {
               "version": "2.1.2",
@@ -12810,6 +12995,7 @@
               "version": "3.0.1",
               "bundled": true,
               "dev": true,
+              "optional": true,
               "requires": {
                 "ansi-regex": "^2.0.0"
               }
@@ -12853,12 +13039,14 @@
             "wrappy": {
               "version": "1.0.2",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "yallist": {
               "version": "3.0.2",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             }
           }
         },
@@ -13124,6 +13312,7 @@
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
       "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "string-width": "^1.0.2 || 2"
       }
diff --git a/package.json b/package.json
index c027888..d38dce4 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "@angular/animations": "^5.1.0",
     "@angular/common": "^5.1.0",
     "@angular/compiler": "^5.1.0",
-    "@angular/core": "^5.1.0",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^5.1.0",
     "@angular/http": "^5.1.0",
     "@angular/platform-browser": "^5.1.0",
diff --git a/yarn.lock b/yarn.lock
index 0f8ef26..bb69c81 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -135,11 +135,12 @@
   dependencies:
     tslib "^1.7.1"
 
-"@angular/core@^5.1.0":
-  version "5.2.1"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-5.2.1.tgz#47347e4098b0e997220d77652f4d9ca44dda8923"
+"@angular/core@^11.0.5":
+  version "11.0.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-11.0.5.tgz#b8c448c3cd4f6dae7327cc1ba4ee2aa29c8dbc26"
+  integrity sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==
   dependencies:
-    tslib "^1.7.1"
+    tslib "^2.0.0"
 
 "@angular/forms@^5.1.0":
   version "5.2.1"
@@ -5602,6 +5603,11 @@ tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.0.tgz#e37a86fda8cbbaf23a057f473c9f4dc64e5fc2e8"
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+  integrity sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==
+
 tslint@~5.9.1:
   version "5.9.1"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.9.1.tgz#1255f87a3ff57eb0b0e1f0e610a8b4748046c9ae"