diff --git a/package-lock.json b/package-lock.json
index 79942e0..c77f932 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -215,6 +215,7 @@
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       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
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         "longest": "^1.0.1",
@@ -1724,29 +1725,6 @@
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-      "integrity": "sha512-0W171WccAjQGGTKLhw4m2nnl0zPHUlTO/I8td4XzJgIB8Hg3ZZx71qT4G4eX8OVsSiaAKiUMy73E3nsbPlg2DQ==",
-      "dev": true,
-      "requires": {
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-        "source-map": "^0.1.38",
-        "source-map-resolve": "^0.5.1",
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-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.1.43.tgz",
-          "integrity": "sha1-wkvBRspRfBRx9drL4lcbK3+eM0Y=",
-          "dev": true,
-          "requires": {
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-          }
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       "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.4.tgz",
@@ -2360,7 +2338,8 @@
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           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2381,12 +2360,14 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "concat-map": "0.0.1"
@@ -2401,17 +2382,20 @@
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "core-util-is": {
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@@ -2528,7 +2512,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -2540,6 +2525,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -2554,6 +2540,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -2561,12 +2548,14 @@
         "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"
@@ -2585,6 +2574,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -2665,7 +2655,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "4.1.1",
@@ -2677,6 +2668,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -2762,7 +2754,8 @@
         "safe-buffer": {
           "version": "5.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2798,6 +2791,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
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@@ -2817,6 +2811,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -2860,12 +2855,14 @@
         "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
         }
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@@ -3143,12 +3140,6 @@
       "integrity": "sha1-khi5srkoojixPcT7a21XbyMUU+o=",
       "dev": true
     },
-    "indent-string": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-3.2.0.tgz",
-      "integrity": "sha1-Sl/W0nzDMvN+VBmlBNu4NxBckok=",
-      "dev": true
-    },
     "inflight": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
@@ -3786,102 +3777,10 @@
       }
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-      "version": "1.12.0",
-      "resolved": "https://registry.npmjs.org/jest-dom/-/jest-dom-1.12.0.tgz",
-      "integrity": "sha512-G8LplxieRJDOmTNJN2SzctewT9HoslclwzEW8znch98gSw5KeajIbporSqUuWHPRB8q8UQl0OI6AtUjGrNcniQ==",
-      "dev": true,
-      "requires": {
-        "chalk": "^2.4.1",
-        "css": "^2.2.3",
-        "jest-diff": "^22.4.3",
-        "jest-matcher-utils": "^22.4.3",
-        "pretty-format": "^23.0.1",
-        "redent": "^2.0.0"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
-          "dev": true
-        },
-        "ansi-styles": {
-          "version": "3.2.1",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
-          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
-          "dev": true,
-          "requires": {
-            "color-convert": "^1.9.0"
-          }
-        },
-        "chalk": {
-          "version": "2.4.1",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
-          "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
-          "dev": true,
-          "requires": {
-            "ansi-styles": "^3.2.1",
-            "escape-string-regexp": "^1.0.5",
-            "supports-color": "^5.3.0"
-          }
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-        "jest-diff": {
-          "version": "22.4.3",
-          "resolved": "https://registry.npmjs.org/jest-diff/-/jest-diff-22.4.3.tgz",
-          "integrity": "sha512-/QqGvCDP5oZOF6PebDuLwrB2BMD8ffJv6TAGAdEVuDx1+uEgrHpSFrfrOiMRx2eJ1hgNjlQrOQEHetVwij90KA==",
-          "dev": true,
-          "requires": {
-            "chalk": "^2.0.1",
-            "diff": "^3.2.0",
-            "jest-get-type": "^22.4.3",
-            "pretty-format": "^22.4.3"
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-              "version": "22.4.3",
-              "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-22.4.3.tgz",
-              "integrity": "sha512-S4oT9/sT6MN7/3COoOy+ZJeA92VmOnveLHgrwBE3Z1W5N9S2A1QGNYiE1z75DAENbJrXXUb+OWXhpJcg05QKQQ==",
-              "dev": true,
-              "requires": {
-                "ansi-regex": "^3.0.0",
-                "ansi-styles": "^3.2.0"
-              }
-            }
-          }
-        },
-        "jest-matcher-utils": {
-          "version": "22.4.3",
-          "resolved": "https://registry.npmjs.org/jest-matcher-utils/-/jest-matcher-utils-22.4.3.tgz",
-          "integrity": "sha512-lsEHVaTnKzdAPR5t4B6OcxXo9Vy4K+kRRbG5gtddY8lBEC+Mlpvm1CJcsMESRjzUhzkz568exMV1hTB76nAKbA==",
-          "dev": true,
-          "requires": {
-            "chalk": "^2.0.1",
-            "jest-get-type": "^22.4.3",
-            "pretty-format": "^22.4.3"
-          },
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-            "pretty-format": {
-              "version": "22.4.3",
-              "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-22.4.3.tgz",
-              "integrity": "sha512-S4oT9/sT6MN7/3COoOy+ZJeA92VmOnveLHgrwBE3Z1W5N9S2A1QGNYiE1z75DAENbJrXXUb+OWXhpJcg05QKQQ==",
-              "dev": true,
-              "requires": {
-                "ansi-regex": "^3.0.0",
-                "ansi-styles": "^3.2.0"
-              }
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-          }
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-        "supports-color": {
-          "version": "5.5.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
-          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
-          "dev": true,
-          "requires": {
-            "has-flag": "^3.0.0"
-          }
-        }
-      }
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/jest-dom/-/jest-dom-4.0.0.tgz",
+      "integrity": "sha512-gBxYZlZB1Jgvf2gP2pRfjjUWF8woGBHj/g5rAQgFPB/0K2atGuhVcPO+BItyjWeKg9zM+dokgcMOH01vrWVMFA==",
+      "dev": true
     },
     "jest-each": {
       "version": "23.5.0",
@@ -4674,7 +4573,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "loose-envify": {
       "version": "1.4.0",
@@ -5490,16 +5390,6 @@
         "util.promisify": "^1.0.0"
       }
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-    "redent": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/redent/-/redent-2.0.0.tgz",
-      "integrity": "sha1-wbIAe0LVfrE4kHmzyDM2OdXhzKo=",
-      "dev": true,
-      "requires": {
-        "indent-string": "^3.0.0",
-        "strip-indent": "^2.0.0"
-      }
-    },
     "regenerate": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/regenerate/-/regenerate-1.4.0.tgz",
@@ -6467,12 +6357,6 @@
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       "dev": true
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-    "strip-indent": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-2.0.0.tgz",
-      "integrity": "sha1-XvjbKV0B5u1sv3qrlpmNeCJSe2g=",
-      "dev": true
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     "supports-color": {
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       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
diff --git a/package.json b/package.json
index c16eea5..1711627 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "babel-preset-react": "6.24.1",
     "babel-preset-stage-2": "6.24.1",
     "jest": "23.5.0",
-    "jest-dom": "1.12.0",
+    "jest-dom": "4.0.0",
     "react": "16.4.2",
     "react-dom": "16.4.2",
     "react-testing-library": "5.0.0"