diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..550fa4c
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,20 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# editorconfig.org
+
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+
+[*.txt]
+indent_style = tab
+indent_size = 4
+
+[*.{diff,md}]
+trim_trailing_whitespace = false
diff --git a/demo/package-lock.json b/demo/package-lock.json
index 27e1f9a..ba5dc8f 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -10,12 +10,12 @@
       "integrity": "sha1-X6rZwsB/YN12dw9xzwJbYqY8/U4="
     },
     "accepts": {
-      "version": "1.3.5",
-      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
-      "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
+      "version": "1.3.7",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
+      "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
       "requires": {
-        "mime-types": "~2.1.18",
-        "negotiator": "0.6.1"
+        "mime-types": "~2.1.24",
+        "negotiator": "0.6.2"
       }
     },
     "acorn": {
@@ -85,9 +85,9 @@
       }
     },
     "ajv-keywords": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.2.0.tgz",
-      "integrity": "sha1-6GuBnGAs+IIa1jdBNpjx3sAhhHo="
+      "version": "3.5.2",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.5.2.tgz",
+      "integrity": "sha512-5p6WTN0DdTGVQk6VjcEju19IgaHudalcfabD7yhDGeA6bcQnmL+CpveLJq/3hvfwd1aof6L386Ougkx6RfyMIQ=="
     },
     "align-text": {
       "version": "0.1.4",
@@ -97,16 +97,6 @@
         "kind-of": "^3.0.2",
         "longest": "^1.0.1",
         "repeat-string": "^1.5.2"
-      },
-      "dependencies": {
-        "kind-of": {
-          "version": "3.2.2",
-          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
-          "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
-          "requires": {
-            "is-buffer": "^1.1.5"
-          }
-        }
       }
     },
     "alphanum-sort": {
@@ -123,9 +113,9 @@
       }
     },
     "ansi-escapes": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.1.0.tgz",
-      "integrity": "sha512-UgAb8H9D41AQnu/PbWlCofQVcnV4Gs2bBJi9eZPxfU/hgglFh3SMDMENRIqdr7H6XFnXdoknctFByVsCOotTVw=="
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.2.0.tgz",
+      "integrity": "sha512-cBhpre4ma+U0T1oM5fXg7Dy1Jw7zzwv7lt/GoCpr+hDQJoYnKVPLL4dCvSEFMmQurOQvSrwT7SL/DAlhBI97RQ=="
     },
     "ansi-html": {
       "version": "0.0.7",
@@ -152,75 +142,6 @@
       "requires": {
         "micromatch": "^2.1.5",
         "normalize-path": "^2.0.0"
-      },
-      "dependencies": {
-        "arr-diff": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
-          "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
-          "requires": {
-            "arr-flatten": "^1.0.1"
-          }
-        },
-        "array-unique": {
-          "version": "0.2.1",
-          "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
-          "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM="
-        },
-        "braces": {
-          "version": "1.8.5",
-          "resolved": "https://registry.npmjs.org/braces/-/braces-1.8.5.tgz",
-          "integrity": "sha1-uneWLhLf+WnWt2cR6RS3N4V79qc=",
-          "requires": {
-            "expand-range": "^1.8.1",
-            "preserve": "^0.2.0",
-            "repeat-element": "^1.1.2"
-          }
-        },
-        "expand-brackets": {
-          "version": "0.1.5",
-          "resolved": "https://registry.npmjs.org/expand-brackets/-/expand-brackets-0.1.5.tgz",
-          "integrity": "sha1-3wcoTjQqgHzXM6xa9yQR5YHRF3s=",
-          "requires": {
-            "is-posix-bracket": "^0.1.0"
-          }
-        },
-        "extglob": {
-          "version": "0.3.2",
-          "resolved": "https://registry.npmjs.org/extglob/-/extglob-0.3.2.tgz",
-          "integrity": "sha1-Lhj/PS9JqydlzskCPwEdqo2DSaE=",
-          "requires": {
-            "is-extglob": "^1.0.0"
-          }
-        },
-        "kind-of": {
-          "version": "3.2.2",
-          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
-          "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
-          "requires": {
-            "is-buffer": "^1.1.5"
-          }
-        },
-        "micromatch": {
-          "version": "2.3.11",
-          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-2.3.11.tgz",
-          "integrity": "sha1-hmd8l9FyCzY0MdBNDRUpO9OMFWU=",
-          "requires": {
-            "arr-diff": "^2.0.0",
-            "array-unique": "^0.2.1",
-            "braces": "^1.8.2",
-            "expand-brackets": "^0.1.4",
-            "extglob": "^0.3.1",
-            "filename-regex": "^2.0.0",
-            "is-extglob": "^1.0.0",
-            "is-glob": "^2.0.1",
-            "kind-of": "^3.0.2",
-            "normalize-path": "^2.0.1",
-            "object.omit": "^2.0.0",
-            "parse-glob": "^3.0.4",
-            "regex-cache": "^0.4.2"
-          }
-        }
       }
     },
     "append-transform": {
@@ -249,9 +170,12 @@
       }
     },
     "arr-diff": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
-      "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
+      "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
+      "requires": {
+        "arr-flatten": "^1.0.1"
+      }
     },
     "arr-flatten": {
       "version": "1.1.0",
@@ -279,17 +203,20 @@
       "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E="
     },
     "array-flatten": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-2.1.1.tgz",
-      "integrity": "sha1-Qmu52oQJDBg42BLIFQryCoMx4pY="
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-2.1.2.tgz",
+      "integrity": "sha512-hNfzcOV8W4NdualtqBFPyVO+54DSJuZGY9qT4pRroB6S9e3iiido2ISIC5h9R2sPJ8H3FHCIiEnsv1lPXO3KtQ=="
     },
     "array-includes": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.0.3.tgz",
-      "integrity": "sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.1.2.tgz",
+      "integrity": "sha512-w2GspexNQpx+PutG3QpT437/BenZBj0M/MZGn5mzv/MofYqo0xmRHzn4lFsoDlWJ+THYsGJmFlW68WlDFx7VRw==",
       "requires": {
-        "define-properties": "^1.1.2",
-        "es-abstract": "^1.7.0"
+        "call-bind": "^1.0.0",
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.18.0-next.1",
+        "get-intrinsic": "^1.0.1",
+        "is-string": "^1.0.5"
       }
     },
     "array-map": {
@@ -316,9 +243,9 @@
       "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY="
     },
     "array-unique": {
-      "version": "0.3.2",
-      "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
-      "integrity": "sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg="
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
+      "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM="
     },
     "arrify": {
       "version": "1.0.1",
@@ -331,25 +258,37 @@
       "integrity": "sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY="
     },
     "asn1": {
-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
-      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y="
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
+      "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
+      "requires": {
+        "safer-buffer": "~2.1.0"
+      }
     },
     "asn1.js": {
-      "version": "4.10.1",
-      "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-4.10.1.tgz",
-      "integrity": "sha512-p32cOF5q0Zqs9uBiONKYLm6BClCoBCM5O9JfeUSlnQLBTxYdTK+pW+nXflm8UkKd2UYlEbYz5qEi0JuZR9ckSw==",
+      "version": "5.4.1",
+      "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-5.4.1.tgz",
+      "integrity": "sha512-+I//4cYPccV8LdmBLiX8CYvf9Sp3vQsrqu2QNXRcrbiWvcx/UdlFiqUJJzxRQxgsZmvhXhn4cSKeSmoFjVdupA==",
       "requires": {
         "bn.js": "^4.0.0",
         "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0"
+        "minimalistic-assert": "^1.0.0",
+        "safer-buffer": "^2.1.0"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw=="
+        }
       }
     },
     "assert": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/assert/-/assert-1.4.1.tgz",
-      "integrity": "sha1-mZEtWRg2tab1s0XA8H7vwI/GXZE=",
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/assert/-/assert-1.5.0.tgz",
+      "integrity": "sha512-EDsgawzwoun2CZkCgtxJbv392v4nbk9XDD06zI+kQYoBM/3RBWLlEyJARDOmhAAosBjWACEkKL6S+lIZtcAubA==",
       "requires": {
+        "object-assign": "^4.1.1",
         "util": "0.10.3"
       },
       "dependencies": {
@@ -384,17 +323,17 @@
       "integrity": "sha1-9wtzXGvKGlycItmCw+Oef+ujva0="
     },
     "async": {
-      "version": "2.6.1",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.1.tgz",
-      "integrity": "sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==",
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
       "requires": {
-        "lodash": "^4.17.10"
+        "lodash": "^4.17.14"
       }
     },
     "async-each": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
-      "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0="
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.3.tgz",
+      "integrity": "sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ=="
     },
     "asynckit": {
       "version": "0.4.0",
@@ -402,9 +341,9 @@
       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
     },
     "atob": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.1.tgz",
-      "integrity": "sha1-ri1acpR38onWDdf5amMUoi3Wwio="
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
+      "integrity": "sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg=="
     },
     "autoprefixer": {
       "version": "7.1.6",
@@ -425,9 +364,9 @@
       "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg="
     },
     "aws4": {
-      "version": "1.7.0",
-      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.7.0.tgz",
-      "integrity": "sha512-32NDda82rhwD9/JBCCkB+MRYDp0oSvlo2IL6rQWA10PQi7tDUM3eqMSltXmY+Oyl/7N3P3qNtAlv7X0d9bI28w=="
+      "version": "1.11.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.11.0.tgz",
+      "integrity": "sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA=="
     },
     "axobject-query": {
       "version": "0.1.0",
@@ -445,6 +384,13 @@
         "chalk": "^1.1.3",
         "esutils": "^2.0.2",
         "js-tokens": "^3.0.2"
+      },
+      "dependencies": {
+        "js-tokens": {
+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-3.0.2.tgz",
+          "integrity": "sha1-mGbfOVECEw449/mWvOtlRDIJwls="
+        }
       }
     },
     "babel-core": {
@@ -658,16 +604,6 @@
         "babel-preset-jest": "^20.0.3"
       }
     },
-    "babel-loader": {
-      "version": "7.1.2",
-      "resolved": "https://registry.npmjs.org/babel-loader/-/babel-loader-7.1.2.tgz",
-      "integrity": "sha512-jRwlFbINAeyDStqK6Dd5YuY0k5YuzQUvlz2ZamuXrXmxav3pNqe9vfJ402+2G+OmlJSXxCOpB6Uz0INM7RQe2A==",
-      "requires": {
-        "find-cache-dir": "^1.0.0",
-        "loader-utils": "^1.0.2",
-        "mkdirp": "^0.5.1"
-      }
-    },
     "babel-messages": {
       "version": "6.23.0",
       "resolved": "https://registry.npmjs.org/babel-messages/-/babel-messages-6.23.0.tgz",
@@ -1178,13 +1114,6 @@
         "lodash": "^4.17.4",
         "mkdirp": "^0.5.1",
         "source-map-support": "^0.4.15"
-      },
-      "dependencies": {
-        "core-js": {
-          "version": "2.5.7",
-          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.5.7.tgz",
-          "integrity": "sha512-RszJCAxg/PP6uzXVXL6BsxSXx/B05oJAQ2vkJRjyjrEcNVycaqOmNb5OTxZPE3xa5gwZduqza6L9JOCenh/Ecw=="
-        }
       }
     },
     "babel-runtime": {
@@ -1194,13 +1123,6 @@
       "requires": {
         "core-js": "^2.4.0",
         "regenerator-runtime": "^0.11.0"
-      },
-      "dependencies": {
-        "core-js": {
-          "version": "2.5.7",
-          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.5.7.tgz",
-          "integrity": "sha512-RszJCAxg/PP6uzXVXL6BsxSXx/B05oJAQ2vkJRjyjrEcNVycaqOmNb5OTxZPE3xa5gwZduqza6L9JOCenh/Ecw=="
-        }
       }
     },
     "babel-template": {
@@ -1299,13 +1221,23 @@
             "is-data-descriptor": "^1.0.0",
             "kind-of": "^6.0.2"
           }
+        },
+        "isobject": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+        },
+        "kind-of": {
+          "version": "6.0.3",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.3.tgz",
+          "integrity": "sha512-dcS1ul+9tmeD95T+x28/ehLgd9mENa3LsvDTtzm3vyBEO7RPptvAD+t44WVXaUjTBRcrpFeFlC8WCruUR456hw=="
         }
       }
     },
     "base64-js": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.0.tgz",
-      "integrity": "sha512-ccav/yGvoa80BQDljCxsmmQ3Xvx60/UpBIij5QN21W3wBi/hhIC9OoO+KLpu9IJTS9j4DRVJ3aDDF9cMSoa2lw=="
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+      "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="
     },
     "batch": {
       "version": "0.6.1",
@@ -1313,60 +1245,69 @@
       "integrity": "sha1-3DQxT05nkxgJP8dgJyUl+UvyXBY="
     },
     "bcrypt-pbkdf": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
-      "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
-      "optional": true,
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
       "requires": {
         "tweetnacl": "^0.14.3"
       }
     },
     "big.js": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/big.js/-/big.js-3.2.0.tgz",
-      "integrity": "sha512-+hN/Zh2D08Mx65pZ/4g5bsmNiZUuChDiQfTUQ7qJr4/kuopCr88xZsAXv6mBoZEsUI4OuGHlX59qE94K2mMW8Q=="
+      "version": "5.2.2",
+      "resolved": "https://registry.npmjs.org/big.js/-/big.js-5.2.2.tgz",
+      "integrity": "sha512-vyL2OymJxmarO8gxMr0mhChsO9QGwhynfuu4+MHTAW6czfq9humCB7rKpUjDd9YUiDPU4mzpyupFSvOClAwbmQ=="
     },
     "binary-extensions": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.11.0.tgz",
-      "integrity": "sha1-RqoXUftqL5PuXmibsQh9SxTGwgU="
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.1.0.tgz",
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-      "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-2.0.0.tgz",
-      "integrity": "sha1-AUKk6KJD+IgsAjOqDgKBqnYVInM=",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-2.0.1.tgz",
+      "integrity": "sha512-Ba5m9/Fa4Xt9eb2ELXt77JxVDV8w7qQrH0zS/TWSJdLyAwQjWoOzpzj5lwVftDz6n/EOu3tNACS84v509qwnJA==",
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@@ -11290,15 +10972,20 @@
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       "integrity": "sha1-VDjNLqk7IC76Ohn+iIeu58lPnJ0="
     },
+    "word-wrap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
+      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ=="
+    },
     "wordwrap": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
       "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus="
     },
     "worker-farm": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.6.0.tgz",
-      "integrity": "sha512-6w+3tHbM87WnSWnENBUvA2pxJPLhQUg5LKwUQHq3r+XPhIM+Gh2R5ycbwPCyuGbNg+lPgdcnQUhuC02kJCvffQ==",
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.7.0.tgz",
+      "integrity": "sha512-rvw3QTZc8lAxyVrqcSGVm5yP/IJ2UcB3U0graE3LCFoZ0Yn2x4EoVSqJKdB/T5M+FLcRPjz4TDacRf3OCfNUzw==",
       "requires": {
         "errno": "~0.1.7"
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@@ -11337,18 +11024,10 @@
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       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
-    "write": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
-      "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
-      "requires": {
-        "mkdirp": "^0.5.1"
-      }
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     "write-file-atomic": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.3.0.tgz",
-      "integrity": "sha512-xuPeK4OdjWqtfi59ylvVL0Yn35SF3zgcAcv7rBPFHVaEapaDr4GdGgm3j7ckTwH9wHL7fGmgfAnb0+THrHb8tA==",
+      "version": "2.4.3",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.3.tgz",
+      "integrity": "sha512-GaETH5wwsX+GcnzhPgKcKjJ6M2Cq3/iZp1WyY/X1CSqrW+jVNM9Y7D8EC2sM4ZG/V8wZlSniJnCKWPmBYAucRQ==",
       "requires": {
         "graceful-fs": "^4.1.11",
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@@ -11366,9 +11045,9 @@
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     },
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-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
-      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
     },
     "y18n": {
       "version": "3.2.1",
@@ -11381,9 +11060,9 @@
       "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
     },
     "yargs": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-7.1.0.tgz",
-      "integrity": "sha1-a6MY6xaWFyf10oT46gA+jWFU0Mg=",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-7.1.1.tgz",
+      "integrity": "sha512-huO4Fr1f9PmiJJdll5kwoS2e4GqzGSsMT3PPMpOwoVkOK8ckqAewMTZyA6LXVQWflleb/Z8oPBEvNsMft0XE+g==",
       "requires": {
         "camelcase": "^3.0.0",
         "cliui": "^3.2.0",
@@ -11397,24 +11076,9 @@
         "string-width": "^1.0.2",
         "which-module": "^1.0.0",
         "y18n": "^3.2.1",
-        "yargs-parser": "^5.0.0"
+        "yargs-parser": "5.0.0-security.0"
       },
       "dependencies": {
-        "camelcase": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
-          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo="
-        },
-        "cliui": {
-          "version": "3.2.0",
-          "resolved": "https://registry.npmjs.org/cliui/-/cliui-3.2.0.tgz",
-          "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
-          "requires": {
-            "string-width": "^1.0.1",
-            "strip-ansi": "^3.0.1",
-            "wrap-ansi": "^2.0.0"
-          }
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         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
@@ -11436,18 +11100,12 @@
       }
     },
     "yargs-parser": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-5.0.0.tgz",
-      "integrity": "sha1-J17PDX/+Bcd+ZOfIbkzZS/DhIoo=",
+      "version": "5.0.0-security.0",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-5.0.0-security.0.tgz",
+      "integrity": "sha512-T69y4Ps64LNesYxeYGYPvfoMTt/7y1XtfpIslUeK4um+9Hu7hlGoRtaDLvdXb7+/tfq4opVa2HRY5xGip022rQ==",
       "requires": {
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-      "dependencies": {
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-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
-          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo="
-        }
+        "camelcase": "^3.0.0",
+        "object.assign": "^4.1.0"
       }
     }
   }
diff --git a/demo/package.json b/demo/package.json
index 0d0e07c..9024d65 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -3,14 +3,14 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "react": "^16.4.1",
+    "react": "^16.14.0",
     "react-dom": "^16.14.0",
-    "react-scripts": "1.1.4"
+    "react-scripts": "^1.1.4"
   },
   "scripts": {
     "start": "react-scripts start",
     "build": "react-scripts build",
-    "test": "react-scripts test --env=jsdom",
+    "test": "react-scripts test",
     "eject": "react-scripts eject"
   }
 }
diff --git a/package-lock.json b/package-lock.json
index eab3f22..678f35d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1547,6 +1547,16 @@
       "dev": true,
       "optional": true
     },
+    "bindings": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
+      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
+      "dev": true,
+      "optional": true,
+      "requires": {
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+      }
+    },
     "bluebird": {
       "version": "3.5.1",
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.1.tgz",
@@ -2927,6 +2937,13 @@
         "ua-parser-js": "^0.7.18"
       }
     },
+    "file-uri-to-path": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
+      "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==",
+      "dev": true,
+      "optional": true
+    },
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       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/filename-regex/-/filename-regex-2.0.1.tgz",
@@ -3053,551 +3070,14 @@
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-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.4.tgz",
-      "integrity": "sha512-z8H8/diyk76B7q5wg+Ud0+CqzcAF3mBBI/bA5ne5zrRUUIvNkJY//D3BqyH571KuAC4Nr7Rw7CjWX4r0y9DvNg==",
+      "version": "1.2.13",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.13.tgz",
+      "integrity": "sha512-oWb1Z6mkHIskLzEJ/XWX0srkpkTQ7vaopMQkyaEIoq0fmtFVxOthb8cCxeT+p3ynTdkk/RZwbgG4brR5BeWECw==",
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+        "bindings": "^1.5.0",
+        "nan": "^2.12.1"
       }
     },
     "function-bind": {
@@ -4895,9 +4375,9 @@
       "dev": true
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-      "resolved": "https://registry.npmjs.org/nan/-/nan-2.10.0.tgz",
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+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.2.tgz",
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@@ -7011,13 +6491,6 @@
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