diff --git a/package-lock.json b/package-lock.json
index 22c9dea..b54c8ef 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "stat-methods",
-  "version": "0.1.5",
+  "version": "0.2.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1765,18 +1765,18 @@
       "dev": true
     },
     "buble": {
-      "version": "0.19.7",
-      "resolved": "https://registry.npmjs.org/buble/-/buble-0.19.7.tgz",
-      "integrity": "sha512-YLgWxX/l+NnfotydBlxqCMPR4FREE4ubuHphALz0FxQ7u2hp3BzxTKQ4nKpapOaRJfEm1gukC68KnT2OymRK0g==",
+      "version": "0.19.8",
+      "resolved": "https://registry.npmjs.org/buble/-/buble-0.19.8.tgz",
+      "integrity": "sha512-IoGZzrUTY5fKXVkgGHw3QeXFMUNBFv+9l8a4QJKG1JhG3nCMHTdEX1DCOg8568E2Q9qvAQIiSokv6Jsgx8p2cA==",
       "dev": true,
       "requires": {
         "acorn": "^6.1.1",
         "acorn-dynamic-import": "^4.0.0",
         "acorn-jsx": "^5.0.1",
         "chalk": "^2.4.2",
-        "magic-string": "^0.25.2",
+        "magic-string": "^0.25.3",
         "minimist": "^1.2.0",
-        "os-homedir": "^1.0.1",
+        "os-homedir": "^2.0.0",
         "regexpu-core": "^4.5.4"
       },
       "dependencies": {
@@ -1786,6 +1786,12 @@
           "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
           "dev": true
         },
+        "os-homedir": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/os-homedir/-/os-homedir-2.0.0.tgz",
+          "integrity": "sha512-saRNz0DSC5C/I++gFIaJTXoFJMRwiP5zHar5vV3xQ2TkgEw6hDCcU5F272JjUylpiVgBrZNQHnfjkLabTfb92Q==",
+          "dev": true
+        },
         "regexpu-core": {
           "version": "4.5.4",
           "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-4.5.4.tgz",
@@ -6168,9 +6174,9 @@
       "dev": true
     },
     "magic-string": {
-      "version": "0.25.2",
-      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.25.2.tgz",
-      "integrity": "sha512-iLs9mPjh9IuTtRsqqhNGYcZXGei0Nh/A4xirrsqW7c+QhKVFL2vm7U09ru6cHRD22azaP/wMDgI+HCqbETMTtg==",
+      "version": "0.25.3",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.25.3.tgz",
+      "integrity": "sha512-6QK0OpF/phMz0Q2AxILkX2mFhi7m+WMwTRg0LQKq/WBB0cDP4rYH3Wp4/d3OTXlrPLVJT/RFqj8tFeAR4nk8AA==",
       "dev": true,
       "requires": {
         "sourcemap-codec": "^1.4.4"
@@ -7808,12 +7814,12 @@
       }
     },
     "rollup-plugin-buble": {
-      "version": "0.19.6",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-buble/-/rollup-plugin-buble-0.19.6.tgz",
-      "integrity": "sha512-El5Fut4/wEO17ZN/n9BZvqd7DXXB2WbJr/DKvr89LXChC/cHllE0XwiUDeAalrTkgr0WrnyLDTCQvEv+cGywWQ==",
+      "version": "0.19.8",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-buble/-/rollup-plugin-buble-0.19.8.tgz",
+      "integrity": "sha512-8J4zPk2DQdk3rxeZvxgzhHh/rm5nJkjwgcsUYisCQg1QbT5yagW+hehYEW7ZNns/NVbDCTv4JQ7h4fC8qKGOKw==",
       "dev": true,
       "requires": {
-        "buble": "^0.19.6",
+        "buble": "^0.19.8",
         "rollup-pluginutils": "^2.3.3"
       }
     },
@@ -8225,9 +8231,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "spdx-correct": {