diff --git a/package-lock.json b/package-lock.json
index 0161d30..7be4269 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,7 +27,7 @@
         "@types/jasmine": "~3.10.0",
         "@types/node": "^12.11.1",
         "jasmine-core": "~3.10.0",
-        "karma": "~6.3.0",
+        "karma": "~6.3.16",
         "karma-chrome-launcher": "~3.1.0",
         "karma-coverage": "~2.0.3",
         "karma-jasmine": "~4.0.0",
@@ -4494,9 +4494,9 @@
       "dev": true
     },
     "node_modules/date-format": {
-      "version": "3.0.0",
-      "resolved": "https://registry.nlark.com/date-format/download/date-format-3.0.0.tgz",
-      "integrity": "sha1-64eANlx9KxURB4+0keZHl4DzrZU=",
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/date-format/-/date-format-4.0.3.tgz",
+      "integrity": "sha512-7P3FyqDcfeznLZp2b+OMitV9Sz2lUnsT87WaTat9nVwqsBkTzPG3lPLNwW3en6F4pHUiWzr6vb8CLhjdK9bcxQ==",
       "dev": true,
       "engines": {
         "node": ">=4.0"
@@ -5542,9 +5542,9 @@
       }
     },
     "node_modules/flatted": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmmirror.com/flatted/download/flatted-2.0.2.tgz?cache=0&sync_timestamp=1636473925233&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fflatted%2Fdownload%2Fflatted-2.0.2.tgz",
-      "integrity": "sha1-RXWyHivO50NKqb5mL0t7X5wrUTg=",
+      "version": "3.2.5",
+      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.2.5.tgz",
+      "integrity": "sha512-WIWGi2L3DyTUvUrwRKgGi9TwxQMUEqPOPQBVi71R96jZXJdFskXEmf54BoZaS1kknGODoIGASGEzBUYdyMCBJg==",
       "dev": true
     },
     "node_modules/flatten": {
@@ -5594,17 +5594,17 @@
       }
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-      "version": "8.1.0",
-      "resolved": "https://registry.nlark.com/fs-extra/download/fs-extra-8.1.0.tgz",
-      "integrity": "sha1-SdQ8RaiM2Wd2aMt74bRu/bjS4cA=",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-10.0.1.tgz",
+      "integrity": "sha512-NbdoVMZso2Lsrn/QwLXOy6rm0ufY2zEOKCDzJR/0kBsb0E6qed0P3iYK+Ath3BfvXEeu4JhEtXLgILx5psUfag==",
       "dev": true,
       "dependencies": {
         "graceful-fs": "^4.2.0",
-        "jsonfile": "^4.0.0",
-        "universalify": "^0.1.0"
+        "jsonfile": "^6.0.1",
+        "universalify": "^2.0.0"
       },
       "engines": {
-        "node": ">=6 <7 || >=8"
+        "node": ">=12"
       }
     },
     "node_modules/fs-minipass": {
@@ -6830,10 +6830,13 @@
       "dev": true
     },
     "node_modules/jsonfile": {
-      "version": "4.0.0",
-      "resolved": "https://registry.nlark.com/jsonfile/download/jsonfile-4.0.0.tgz",
-      "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-6.1.0.tgz",
+      "integrity": "sha512-5dgndWOriYSm5cnYaJNhalLNDKOqFwyDB/rr1E9ZsGciGvKPs8R2xYGCacuf3z6K1YKDz182fd+fY3cn3pMqXQ==",
       "dev": true,
+      "dependencies": {
+        "universalify": "^2.0.0"
+      },
       "optionalDependencies": {
         "graceful-fs": "^4.1.6"
       }
@@ -6848,15 +6851,15 @@
       ]
     },
     "node_modules/karma": {
-      "version": "6.3.9",
-      "resolved": "https://registry.npmmirror.com/karma/download/karma-6.3.9.tgz?cache=0&sync_timestamp=1637098937926&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fkarma%2Fdownload%2Fkarma-6.3.9.tgz",
-      "integrity": "sha512-E/MqdLM9uVIhfuyVnrhlGBu4miafBdXEAEqCmwdEMh3n17C7UWC/8Kvm3AYKr91gc7scutekZ0xv6rxRaUCtnw==",
+      "version": "6.3.16",
+      "resolved": "https://registry.npmjs.org/karma/-/karma-6.3.16.tgz",
+      "integrity": "sha512-nEU50jLvDe5yvXqkEJRf8IuvddUkOY2x5Xc4WXHz6dxINgGDrgD2uqQWeVrJs4hbfNaotn+HQ1LZJ4yOXrL7xQ==",
       "dev": true,
       "dependencies": {
         "body-parser": "^1.19.0",
         "braces": "^3.0.2",
         "chokidar": "^3.5.1",
-        "colors": "^1.4.0",
+        "colors": "1.4.0",
         "connect": "^3.7.0",
         "di": "^0.0.1",
         "dom-serialize": "^2.2.1",
@@ -6865,9 +6868,10 @@
         "http-proxy": "^1.18.1",
         "isbinaryfile": "^4.0.8",
         "lodash": "^4.17.21",
-        "log4js": "^6.3.0",
+        "log4js": "^6.4.1",
         "mime": "^2.5.2",
         "minimatch": "^3.0.4",
+        "mkdirp": "^0.5.5",
         "qjobs": "^1.2.0",
         "range-parser": "^1.2.1",
         "rimraf": "^3.0.2",
@@ -6969,6 +6973,18 @@
         "source-map-support": "^0.5.5"
       }
     },
+    "node_modules/karma/node_modules/mkdirp": {
+      "version": "0.5.5",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
+      "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
+      "dev": true,
+      "dependencies": {
+        "minimist": "^1.2.5"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
     "node_modules/karma/node_modules/source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npm.taobao.org/source-map/download/source-map-0.6.1.tgz",
@@ -7279,21 +7295,38 @@
       }
     },
     "node_modules/log4js": {
-      "version": "6.3.0",
-      "resolved": "https://registry.nlark.com/log4js/download/log4js-6.3.0.tgz",
-      "integrity": "sha1-EN+vu0NDUaPjAnegC5h5RG9xW8s=",
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/log4js/-/log4js-6.4.1.tgz",
+      "integrity": "sha512-iUiYnXqAmNKiIZ1XSAitQ4TmNs8CdZYTAWINARF3LjnsLN8tY5m0vRwd6uuWj/yNY0YHxeZodnbmxKFUOM2rMg==",
       "dev": true,
       "dependencies": {
-        "date-format": "^3.0.0",
-        "debug": "^4.1.1",
-        "flatted": "^2.0.1",
-        "rfdc": "^1.1.4",
-        "streamroller": "^2.2.4"
+        "date-format": "^4.0.3",
+        "debug": "^4.3.3",
+        "flatted": "^3.2.4",
+        "rfdc": "^1.3.0",
+        "streamroller": "^3.0.2"
       },
       "engines": {
         "node": ">=8.0"
       }
     },
+    "node_modules/log4js/node_modules/debug": {
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+      "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
+      "dev": true,
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/lru-cache": {
       "version": "6.0.0",
       "resolved": "https://registry.npm.taobao.org/lru-cache/download/lru-cache-6.0.0.tgz",
@@ -10676,8 +10709,8 @@
     },
     "node_modules/rfdc": {
       "version": "1.3.0",
-      "resolved": "https://registry.nlark.com/rfdc/download/rfdc-1.3.0.tgz",
-      "integrity": "sha1-0LfEQasnINBdxM8m4ByJYx2doIs=",
+      "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.3.0.tgz",
+      "integrity": "sha512-V2hovdzFbOi77/WajaSMXk2OLm+xNIeQdMMuB7icj7bk6zi2F8GGAxigcnDFpJHbNyNcgyJDiP+8nOrY5cZGrA==",
       "dev": true
     },
     "node_modules/rimraf": {
@@ -11301,28 +11334,19 @@
       }
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     "node_modules/streamroller": {
-      "version": "2.2.4",
-      "resolved": "https://registry.npm.taobao.org/streamroller/download/streamroller-2.2.4.tgz?cache=0&sync_timestamp=1587335376986&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstreamroller%2Fdownload%2Fstreamroller-2.2.4.tgz",
-      "integrity": "sha1-wZjO1C25QIamGTYIGHzoCl8rDlM=",
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/streamroller/-/streamroller-3.0.2.tgz",
+      "integrity": "sha512-ur6y5S5dopOaRXBuRIZ1u6GC5bcEXHRZKgfBjfCglMhmIf+roVCECjvkEYzNQOXIN2/JPnkMPW/8B3CZoKaEPA==",
       "dev": true,
       "dependencies": {
-        "date-format": "^2.1.0",
+        "date-format": "^4.0.3",
         "debug": "^4.1.1",
-        "fs-extra": "^8.1.0"
+        "fs-extra": "^10.0.0"
       },
       "engines": {
         "node": ">=8.0"
       }
     },
-    "node_modules/streamroller/node_modules/date-format": {
-      "version": "2.1.0",
-      "resolved": "https://registry.nlark.com/date-format/download/date-format-2.1.0.tgz",
-      "integrity": "sha1-MdW16iEc9f12TNOLr50DPffhJc8=",
-      "dev": true,
-      "engines": {
-        "node": ">=4.0"
-      }
-    },
     "node_modules/string_decoder": {
       "version": "1.3.0",
       "resolved": "https://registry.nlark.com/string_decoder/download/string_decoder-1.3.0.tgz",
@@ -11805,12 +11829,12 @@
       }
     },
     "node_modules/universalify": {
-      "version": "0.1.2",
-      "resolved": "https://registry.nlark.com/universalify/download/universalify-0.1.2.tgz",
-      "integrity": "sha1-tkb2m+OULavOzJ1mOcgNwQXvqmY=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.0.tgz",
+      "integrity": "sha512-hAZsKq7Yy11Zu1DE0OzWjw7nnLZmJZYTDZZyEFHZdUhV8FkH5MCfoU1XMaxXovpyW5nq5scPqq0ZDP9Zyl04oQ==",
       "dev": true,
       "engines": {
-        "node": ">= 4.0.0"
+        "node": ">= 10.0.0"
       }
     },
     "node_modules/unpipe": {
@@ -15732,9 +15756,9 @@
       "dev": true
     },
     "date-format": {
-      "version": "3.0.0",
-      "resolved": "https://registry.nlark.com/date-format/download/date-format-3.0.0.tgz",
-      "integrity": "sha1-64eANlx9KxURB4+0keZHl4DzrZU=",
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/date-format/-/date-format-4.0.3.tgz",
+      "integrity": "sha512-7P3FyqDcfeznLZp2b+OMitV9Sz2lUnsT87WaTat9nVwqsBkTzPG3lPLNwW3en6F4pHUiWzr6vb8CLhjdK9bcxQ==",
       "dev": true
     },
     "debug": {
@@ -16526,9 +16550,9 @@
       }
     },
     "flatted": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmmirror.com/flatted/download/flatted-2.0.2.tgz?cache=0&sync_timestamp=1636473925233&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fflatted%2Fdownload%2Fflatted-2.0.2.tgz",
-      "integrity": "sha1-RXWyHivO50NKqb5mL0t7X5wrUTg=",
+      "version": "3.2.5",
+      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.2.5.tgz",
+      "integrity": "sha512-WIWGi2L3DyTUvUrwRKgGi9TwxQMUEqPOPQBVi71R96jZXJdFskXEmf54BoZaS1kknGODoIGASGEzBUYdyMCBJg==",
       "dev": true
     },
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@@ -16556,14 +16580,14 @@
       "dev": true
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-      "version": "8.1.0",
-      "resolved": "https://registry.nlark.com/fs-extra/download/fs-extra-8.1.0.tgz",
-      "integrity": "sha1-SdQ8RaiM2Wd2aMt74bRu/bjS4cA=",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-10.0.1.tgz",
+      "integrity": "sha512-NbdoVMZso2Lsrn/QwLXOy6rm0ufY2zEOKCDzJR/0kBsb0E6qed0P3iYK+Ath3BfvXEeu4JhEtXLgILx5psUfag==",
       "dev": true,
       "requires": {
         "graceful-fs": "^4.2.0",
-        "jsonfile": "^4.0.0",
-        "universalify": "^0.1.0"
+        "jsonfile": "^6.0.1",
+        "universalify": "^2.0.0"
       }
     },
     "fs-minipass": {
@@ -17538,12 +17562,13 @@
       "dev": true
     },
     "jsonfile": {
-      "version": "4.0.0",
-      "resolved": "https://registry.nlark.com/jsonfile/download/jsonfile-4.0.0.tgz",
-      "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-6.1.0.tgz",
+      "integrity": "sha512-5dgndWOriYSm5cnYaJNhalLNDKOqFwyDB/rr1E9ZsGciGvKPs8R2xYGCacuf3z6K1YKDz182fd+fY3cn3pMqXQ==",
       "dev": true,
       "requires": {
-        "graceful-fs": "^4.1.6"
+        "graceful-fs": "^4.1.6",
+        "universalify": "^2.0.0"
       }
     },
     "jsonparse": {
@@ -17553,15 +17578,15 @@
       "dev": true
     },
     "karma": {
-      "version": "6.3.9",
-      "resolved": "https://registry.npmmirror.com/karma/download/karma-6.3.9.tgz?cache=0&sync_timestamp=1637098937926&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fkarma%2Fdownload%2Fkarma-6.3.9.tgz",
-      "integrity": "sha512-E/MqdLM9uVIhfuyVnrhlGBu4miafBdXEAEqCmwdEMh3n17C7UWC/8Kvm3AYKr91gc7scutekZ0xv6rxRaUCtnw==",
+      "version": "6.3.16",
+      "resolved": "https://registry.npmjs.org/karma/-/karma-6.3.16.tgz",
+      "integrity": "sha512-nEU50jLvDe5yvXqkEJRf8IuvddUkOY2x5Xc4WXHz6dxINgGDrgD2uqQWeVrJs4hbfNaotn+HQ1LZJ4yOXrL7xQ==",
       "dev": true,
       "requires": {
         "body-parser": "^1.19.0",
         "braces": "^3.0.2",
         "chokidar": "^3.5.1",
-        "colors": "^1.4.0",
+        "colors": "1.4.0",
         "connect": "^3.7.0",
         "di": "^0.0.1",
         "dom-serialize": "^2.2.1",
@@ -17570,9 +17595,10 @@
         "http-proxy": "^1.18.1",
         "isbinaryfile": "^4.0.8",
         "lodash": "^4.17.21",
-        "log4js": "^6.3.0",
+        "log4js": "^6.4.1",
         "mime": "^2.5.2",
         "minimatch": "^3.0.4",
+        "mkdirp": "^0.5.5",
         "qjobs": "^1.2.0",
         "range-parser": "^1.2.1",
         "rimraf": "^3.0.2",
@@ -17583,6 +17609,15 @@
         "yargs": "^16.1.1"
       },
       "dependencies": {
+        "mkdirp": {
+          "version": "0.5.5",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
+          "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
+          "dev": true,
+          "requires": {
+            "minimist": "^1.2.5"
+          }
+        },
         "source-map": {
           "version": "0.6.1",
           "resolved": "https://registry.npm.taobao.org/source-map/download/source-map-0.6.1.tgz",
@@ -17876,16 +17911,27 @@
       }
     },
     "log4js": {
-      "version": "6.3.0",
-      "resolved": "https://registry.nlark.com/log4js/download/log4js-6.3.0.tgz",
-      "integrity": "sha1-EN+vu0NDUaPjAnegC5h5RG9xW8s=",
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/log4js/-/log4js-6.4.1.tgz",
+      "integrity": "sha512-iUiYnXqAmNKiIZ1XSAitQ4TmNs8CdZYTAWINARF3LjnsLN8tY5m0vRwd6uuWj/yNY0YHxeZodnbmxKFUOM2rMg==",
       "dev": true,
       "requires": {
-        "date-format": "^3.0.0",
-        "debug": "^4.1.1",
-        "flatted": "^2.0.1",
-        "rfdc": "^1.1.4",
-        "streamroller": "^2.2.4"
+        "date-format": "^4.0.3",
+        "debug": "^4.3.3",
+        "flatted": "^3.2.4",
+        "rfdc": "^1.3.0",
+        "streamroller": "^3.0.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.3.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+          "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
+          "dev": true,
+          "requires": {
+            "ms": "2.1.2"
+          }
+        }
       }
     },
     "lru-cache": {
@@ -20439,8 +20485,8 @@
     },
     "rfdc": {
       "version": "1.3.0",
-      "resolved": "https://registry.nlark.com/rfdc/download/rfdc-1.3.0.tgz",
-      "integrity": "sha1-0LfEQasnINBdxM8m4ByJYx2doIs=",
+      "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.3.0.tgz",
+      "integrity": "sha512-V2hovdzFbOi77/WajaSMXk2OLm+xNIeQdMMuB7icj7bk6zi2F8GGAxigcnDFpJHbNyNcgyJDiP+8nOrY5cZGrA==",
       "dev": true
     },
     "rimraf": {
@@ -20952,22 +20998,14 @@
       "dev": true
     },
     "streamroller": {
-      "version": "2.2.4",
-      "resolved": "https://registry.npm.taobao.org/streamroller/download/streamroller-2.2.4.tgz?cache=0&sync_timestamp=1587335376986&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstreamroller%2Fdownload%2Fstreamroller-2.2.4.tgz",
-      "integrity": "sha1-wZjO1C25QIamGTYIGHzoCl8rDlM=",
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/streamroller/-/streamroller-3.0.2.tgz",
+      "integrity": "sha512-ur6y5S5dopOaRXBuRIZ1u6GC5bcEXHRZKgfBjfCglMhmIf+roVCECjvkEYzNQOXIN2/JPnkMPW/8B3CZoKaEPA==",
       "dev": true,
       "requires": {
-        "date-format": "^2.1.0",
+        "date-format": "^4.0.3",
         "debug": "^4.1.1",
-        "fs-extra": "^8.1.0"
-      },
-      "dependencies": {
-        "date-format": {
-          "version": "2.1.0",
-          "resolved": "https://registry.nlark.com/date-format/download/date-format-2.1.0.tgz",
-          "integrity": "sha1-MdW16iEc9f12TNOLr50DPffhJc8=",
-          "dev": true
-        }
+        "fs-extra": "^10.0.0"
       }
     },
     "string_decoder": {
@@ -21323,9 +21361,9 @@
       }
     },
     "universalify": {
-      "version": "0.1.2",
-      "resolved": "https://registry.nlark.com/universalify/download/universalify-0.1.2.tgz",
-      "integrity": "sha1-tkb2m+OULavOzJ1mOcgNwQXvqmY=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.0.tgz",
+      "integrity": "sha512-hAZsKq7Yy11Zu1DE0OzWjw7nnLZmJZYTDZZyEFHZdUhV8FkH5MCfoU1XMaxXovpyW5nq5scPqq0ZDP9Zyl04oQ==",
       "dev": true
     },
     "unpipe": {
diff --git a/package.json b/package.json
index aa73a4c..d69940e 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "@types/jasmine": "~3.10.0",
     "@types/node": "^12.11.1",
     "jasmine-core": "~3.10.0",
-    "karma": "~6.3.0",
+    "karma": "~6.3.16",
     "karma-chrome-launcher": "~3.1.0",
     "karma-coverage": "~2.0.3",
     "karma-jasmine": "~4.0.0",