diff --git a/package-lock.json b/package-lock.json
index ed1b5ba..a9d3f9d 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -1657,948 +1617,557 @@
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-          "version": "2.1.0",
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@@ -3840,39 +3223,29 @@
           "bundled": true,
           "dev": true
         },
-        "collection-visit": {
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           "dev": true,
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@@ -3884,279 +3257,93 @@
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+            "is-arrayish": "^0.2.1"
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+        },
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+          "bundled": true,
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+          "bundled": true,
+          "dev": true,
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               "bundled": true,
               "dev": true,
               "requires": {
-                "is-extendable": "^0.1.0"
+                "nice-try": "^1.0.4",
+                "path-key": "^2.0.1",
+                "semver": "^5.5.0",
+                "shebang-command": "^1.2.0",
+                "which": "^1.2.9"
               }
             }
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           "dev": true,
           "requires": {
             "commondir": "^1.0.1",
-            "mkdirp": "^0.5.1",
-            "pkg-dir": "^1.0.0"
+            "make-dir": "^1.0.0",
+            "pkg-dir": "^3.0.0"
           }
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           "dev": true,
           "requires": {
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+            "locate-path": "^3.0.0"
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@@ -4166,36 +3353,26 @@
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           "version": "1.0.0",
           "bundled": true,
           "dev": true
         },
         "get-caller-file": {
-          "version": "1.0.2",
+          "version": "1.0.3",
           "bundled": true,
           "dev": true
         },
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-          "version": "3.0.0",
-          "bundled": true,
-          "dev": true
-        },
-        "get-value": {
-          "version": "2.0.6",
+          "version": "4.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "requires": {
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+          }
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-          "version": "7.1.2",
+          "version": "7.1.3",
           "bundled": true,
           "dev": true,
           "requires": {
@@ -4208,62 +3385,43 @@
           }
         },
         "graceful-fs": {
-          "version": "4.1.11",
+          "version": "4.1.15",
           "bundled": true,
           "dev": true
         },
         "handlebars": {
-          "version": "4.0.11",
+          "version": "4.1.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "async": "^1.4.0",
+            "async": "^2.5.0",
             "optimist": "^0.6.1",
-            "source-map": "^0.4.4",
-            "uglify-js": "^2.6"
+            "source-map": "^0.6.1",
+            "uglify-js": "^3.1.4"
           },
           "dependencies": {
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-              "version": "0.4.4",
+              "version": "0.6.1",
               "bundled": true,
-              "dev": true,
-              "requires": {
-                "amdefine": ">=0.0.4"
-              }
+              "dev": true
             }
           }
         },
-        "has-value": {
-          "version": "1.0.0",
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           "bundled": true,
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-          "requires": {
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-            "has-values": "^1.0.0",
-            "isobject": "^3.0.0"
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+          "dev": true
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           "bundled": true,
           "dev": true,
           "requires": {
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-              }
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+            "is-stream": "^1.0.1"
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         },
         "hosted-git-info": {
-          "version": "2.6.0",
+          "version": "2.7.1",
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           "dev": true
         },
@@ -4287,248 +3445,135 @@
           "dev": true
         },
         "invert-kv": {
-          "version": "1.0.0",
+          "version": "2.0.0",
           "bundled": true,
           "dev": true
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               "dev": true,
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+          },
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-          "version": "3.2.2",
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           "bundled": true,
           "dev": true,
           "requires": {
-            "is-buffer": "^1.1.5"
+            "handlebars": "^4.1.0"
           }
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-        "lazy-cache": {
-          "version": "1.0.4",
+        "json-parse-better-errors": {
+          "version": "1.0.2",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "lcid": {
-          "version": "1.0.0",
+          "version": "2.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "invert-kv": "^1.0.0"
+            "invert-kv": "^2.0.0"
           }
         },
         "load-json-file": {
-          "version": "1.1.0",
+          "version": "4.0.0",
           "bundled": true,
           "dev": true,
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-            "pify": "^2.0.0",
-            "pinkie-promise": "^2.0.0",
-            "strip-bom": "^2.0.0"
+            "parse-json": "^4.0.0",
+            "pify": "^3.0.0",
+            "strip-bom": "^3.0.0"
           }
         },
         "locate-path": {
-          "version": "2.0.0",
+          "version": "3.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "p-locate": "^2.0.0",
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-              "bundled": true,
-              "dev": true
-            }
           }
         },
-        "longest": {
-          "version": "1.0.1",
+        "lodash": {
+          "version": "4.17.11",
+          "bundled": true,
+          "dev": true
+        },
+        "lodash.flattendeep": {
+          "version": "4.4.0",
           "bundled": true,
           "dev": true
         },
         "lru-cache": {
-          "version": "4.1.3",
+          "version": "4.1.5",
           "bundled": true,
           "dev": true,
           "requires": {
@@ -4536,38 +3581,30 @@
             "yallist": "^2.1.2"
           }
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-          "version": "0.2.2",
-          "bundled": true,
-          "dev": true
-        },
-        "map-visit": {
-          "version": "1.0.0",
+        "make-dir": {
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           "bundled": true,
           "dev": true,
           "requires": {
-            "object-visit": "^1.0.0"
+            "pify": "^3.0.0"
           }
         },
-        "md5-hex": {
-          "version": "1.3.0",
+        "map-age-cleaner": {
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           "bundled": true,
           "dev": true,
           "requires": {
-            "md5-o-matic": "^0.1.1"
+            "p-defer": "^1.0.0"
           }
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-        "md5-o-matic": {
-          "version": "0.1.1",
-          "bundled": true,
-          "dev": true
-        },
         "mem": {
-          "version": "1.1.0",
+          "version": "4.1.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "mimic-fn": "^1.0.0"
+            "map-age-cleaner": "^0.1.1",
+            "mimic-fn": "^1.0.0",
+            "p-is-promise": "^2.0.0"
           }
         },
         "merge-source-map": {
@@ -4585,33 +3622,6 @@
             }
           }
         },
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-          "bundled": true,
-          "dev": true,
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-              "dev": true
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           "version": "1.2.0",
           "bundled": true,
@@ -4626,75 +3636,42 @@
           }
         },
         "minimist": {
-          "version": "0.0.8",
+          "version": "0.0.10",
           "bundled": true,
           "dev": true
         },
-        "mixin-deep": {
-          "version": "1.3.1",
+        "mkdirp": {
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           "bundled": true,
           "dev": true,
           "requires": {
-            "for-in": "^1.0.2",
-            "is-extendable": "^1.0.1"
+            "minimist": "0.0.8"
           },
           "dependencies": {
-            "is-extendable": {
-              "version": "1.0.1",
+            "minimist": {
+              "version": "0.0.8",
               "bundled": true,
-              "dev": true,
-              "requires": {
-                "is-plain-object": "^2.0.4"
-              }
+              "dev": true
             }
           }
         },
-        "mkdirp": {
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-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "minimist": "0.0.8"
-          }
-        },
         "ms": {
-          "version": "2.0.0",
+          "version": "2.1.1",
           "bundled": true,
           "dev": true
         },
-        "nanomatch": {
-          "version": "1.2.9",
+        "nice-try": {
+          "version": "1.0.5",
           "bundled": true,
-          "dev": true,
-          "requires": {
-            "arr-diff": "^4.0.0",
-            "array-unique": "^0.3.2",
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-          "dependencies": {
-            "kind-of": {
-              "version": "6.0.2",
-              "bundled": true,
-              "dev": true
-            }
-          }
+          "dev": true
         },
         "normalize-package-data": {
-          "version": "2.4.0",
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           "bundled": true,
           "dev": true,
           "requires": {
             "hosted-git-info": "^2.1.4",
-            "is-builtin-module": "^1.0.0",
+            "resolve": "^1.10.0",
             "semver": "2 || 3 || 4 || 5",
             "validate-npm-package-license": "^3.0.1"
           }
@@ -4712,47 +3689,6 @@
           "bundled": true,
           "dev": true
         },
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           "bundled": true,
@@ -4776,62 +3712,76 @@
           "dev": true
         },
         "os-locale": {
-          "version": "2.1.0",
+          "version": "3.1.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "execa": "^0.7.0",
-            "lcid": "^1.0.0",
-            "mem": "^1.1.0"
+            "execa": "^1.0.0",
+            "lcid": "^2.0.0",
+            "mem": "^4.0.0"
           }
         },
+        "p-defer": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true
+        },
         "p-finally": {
           "version": "1.0.0",
           "bundled": true,
           "dev": true
         },
+        "p-is-promise": {
+          "version": "2.0.0",
+          "bundled": true,
+          "dev": true
+        },
         "p-limit": {
-          "version": "1.2.0",
+          "version": "2.1.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "p-try": "^1.0.0"
+            "p-try": "^2.0.0"
           }
         },
         "p-locate": {
-          "version": "2.0.0",
+          "version": "3.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "p-limit": "^1.1.0"
+            "p-limit": "^2.0.0"
           }
         },
         "p-try": {
-          "version": "1.0.0",
+          "version": "2.0.0",
           "bundled": true,
           "dev": true
         },
-        "parse-json": {
-          "version": "2.2.0",
+        "package-hash": {
+          "version": "3.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "error-ex": "^1.2.0"
+            "graceful-fs": "^4.1.15",
+            "hasha": "^3.0.0",
+            "lodash.flattendeep": "^4.4.0",
+            "release-zalgo": "^1.0.0"
           }
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-        "pascalcase": {
-          "version": "0.1.1",
-          "bundled": true,
-          "dev": true
-        },
-        "path-exists": {
-          "version": "2.1.0",
+        "parse-json": {
+          "version": "4.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "pinkie-promise": "^2.0.0"
+            "error-ex": "^1.3.1",
+            "json-parse-better-errors": "^1.0.1"
           }
         },
+        "path-exists": {
+          "version": "3.0.0",
+          "bundled": true,
+          "dev": true
+        },
         "path-is-absolute": {
           "version": "1.0.1",
           "bundled": true,
@@ -4843,339 +3793,133 @@
           "dev": true
         },
         "path-parse": {
-          "version": "1.0.5",
+          "version": "1.0.6",
           "bundled": true,
           "dev": true
         },
         "path-type": {
-          "version": "1.1.0",
+          "version": "3.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "graceful-fs": "^4.1.2",
-            "pify": "^2.0.0",
-            "pinkie-promise": "^2.0.0"
+            "pify": "^3.0.0"
           }
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-          "version": "2.3.0",
-          "bundled": true,
-          "dev": true
-        },
-        "pinkie": {
-          "version": "2.0.4",
+          "version": "3.0.0",
           "bundled": true,
           "dev": true
         },
-        "pinkie-promise": {
-          "version": "2.0.1",
-          "bundled": true,
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-          "requires": {
-            "pinkie": "^2.0.0"
-          }
-        },
         "pkg-dir": {
-          "version": "1.0.0",
+          "version": "3.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
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-              "dev": true,
-              "requires": {
-                "path-exists": "^2.0.0",
-                "pinkie-promise": "^2.0.0"
-              }
-            }
+            "find-up": "^3.0.0"
           }
         },
-        "posix-character-classes": {
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-          "bundled": true,
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+        "pump": {
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           "bundled": true,
           "dev": true,
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+        "read-pkg": {
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           "bundled": true,
           "dev": true,
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-          "bundled": true,
-          "dev": true
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-          "version": "2.0.0",
+        "read-pkg-up": {
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           "bundled": true,
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           "requires": {
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         },
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+        "release-zalgo": {
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           "bundled": true,
           "dev": true,
           "requires": {
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-          "bundled": true,
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           "dev": true
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+        "require-main-filename": {
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           "bundled": true,
           "dev": true
         },
-        "snapdragon": {
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+        "resolve": {
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           "bundled": true,
           "dev": true,
           "requires": {
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 }
diff --git a/package.json b/package.json
index 5a6f739..d20c4bf 100644
--- a/package.json
+++ b/package.json
@@ -22,8 +22,8 @@
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   "homepage": "https://github.com/QuentinRoy/polygon-centroid",
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     "node": ">=6.4.0"