diff --git a/package-lock.json b/package-lock.json
index a8a3909..e3da2e9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,9 +1,60 @@
 {
   "name": "minimize",
-  "version": "2.1.0",
+  "version": "2.2.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
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+      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.3.0.tgz",
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+      "dev": true,
+      "requires": {
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+          "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
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+          "dev": true
+        }
+      }
+    },
+    "@sinonjs/formatio": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz",
+      "integrity": "sha512-ls6CAMA6/5gG+O/IdsBcblvnd8qcO/l1TYoNeAzp3wcISOxlPXQEus0mLcdwazEkWjaBdaJ3TaxmNgCLWwvWzg==",
+      "dev": true,
+      "requires": {
+        "samsam": "1.3.0"
+      }
+    },
+    "@sinonjs/samsam": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-3.2.0.tgz",
+      "integrity": "sha512-j5F1rScewLtx6pbTK0UAjA3jJj4RYiSKOix53YWv+Jzy/AZ69qHxUpU8fwVLjyKbEEud9QrLpv6Ggs7WqTimYw==",
+      "dev": true,
+      "requires": {
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+        "array-from": "^2.1.1",
+        "lodash": "^4.17.11"
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+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
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+          "dev": true
+        }
+      }
+    },
+    "@sinonjs/text-encoding": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz",
+      "integrity": "sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ==",
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       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.0.9.tgz",
@@ -15,6 +66,7 @@
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       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
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         "longest": "1.0.1",
@@ -46,6 +98,12 @@
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+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/array-from/-/array-from-2.1.1.tgz",
+      "integrity": "sha1-z+nYwmYoudxa7MYqn12PHzUsEZU=",
+      "dev": true
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@@ -77,9 +135,9 @@
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-      "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
+      "version": "1.3.1",
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@@ -155,18 +213,21 @@
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-      "integrity": "sha1-iQwHw/1OZJU3Y4kRz2keVFi2/KU=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/color/-/color-3.0.0.tgz",
+      "integrity": "sha512-jCpd5+s0s0t7p3pHQKpnJ0TpQKKdleP71LWcA0aqiljpiuAkOSUFN/dyH8ZwF0hRmFlrIuRhufds1QyEP9EB+w==",
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-        "color-convert": "0.5.3",
-        "color-string": "0.3.0"
+        "color-convert": "^1.9.1",
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-      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-0.5.3.tgz",
-      "integrity": "sha1-vbbGnOZg+t/+CwAHzER+G59ygr0="
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
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@@ -174,31 +235,32 @@
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-      "integrity": "sha1-J9RvtnAlxcL6JZk7+/V55HhBuZE=",
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/color-string/-/color-string-1.5.3.tgz",
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       "requires": {
-        "color-name": "1.1.3"
+        "color-name": "^1.0.0",
+        "simple-swizzle": "^0.2.2"
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-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/colornames/-/colornames-0.0.2.tgz",
-      "integrity": "sha1-2BH9bIT1kClJmorEQ2ICk1uSvjE="
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/colornames/-/colornames-1.1.1.tgz",
+      "integrity": "sha1-+IiQMGhcfE/54qVZ9Qd+t2qBb5Y="
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-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/colorspace/-/colorspace-1.0.1.tgz",
-      "integrity": "sha1-yZx5btMRKLmHalLh7l7gOkpxl0k=",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/colorspace/-/colorspace-1.1.1.tgz",
+      "integrity": "sha512-pI3btWyiuz7Ken0BWh9Elzsmv2bM9AhA7psXib4anUXy/orfZ/E0MbQwhSOG/9L8hLlalqrU0UhOuqxW1YjmVw==",
       "requires": {
-        "color": "0.8.0",
-        "text-hex": "0.0.0"
+        "color": "3.0.x",
+        "text-hex": "1.0.x"
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     "commander": {
-      "version": "2.11.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.11.0.tgz",
-      "integrity": "sha512-b0553uYA5YAEGgyYIGYROzKQ7X5RAqedkfjiZxwi0kL1g3bOaBNNZfYkzt/CL0umgD5wc9Jec2FbB98CjkMRvQ==",
+      "version": "2.15.1",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
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@@ -274,19 +336,20 @@
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-      "integrity": "sha1-4QkJALSVI+hSe+IPCBJ1IF8q42o=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/diagnostics/-/diagnostics-2.0.0.tgz",
+      "integrity": "sha512-OmGfK4nTT7m281CtZR22cJ+dmnqqbbKxcC5xk/owHaK687qwRqB2cpgfb6E505U/0V0q9ouxcnAyxexGaIL59A==",
       "requires": {
-        "colorspace": "1.0.1",
-        "enabled": "1.0.2",
-        "kuler": "0.0.0"
+        "colorspace": "1.1.x",
+        "enabled": "^2.0.0",
+        "kuler": "1.0.x",
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@@ -333,23 +396,15 @@
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-      "requires": {
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+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/enabled/-/enabled-2.0.0.tgz",
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@@ -435,21 +490,17 @@
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+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.0.tgz",
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@@ -476,9 +527,9 @@
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@@ -550,11 +601,17 @@
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       "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
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@@ -620,21 +677,28 @@
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-      "integrity": "sha1-tmu0a5NOVQ9Z2BiEjgq7pPf1VTw=",
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       "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
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+            "has-flag": "^3.0.0"
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@@ -791,17 +863,35 @@
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       "dev": true
     },
-    "native-promise-only": {
-      "version": "0.8.1",
-      "resolved": "https://registry.npmjs.org/native-promise-only/-/native-promise-only-0.8.1.tgz",
-      "integrity": "sha1-IKMYwwy0X3H+et+/eyHJnBRy7xE=",
-      "dev": true
-    },
     "next-tick": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/next-tick/-/next-tick-1.0.0.tgz",
       "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw="
     },
+    "nise": {
+      "version": "1.4.10",
+      "resolved": "https://registry.npmjs.org/nise/-/nise-1.4.10.tgz",
+      "integrity": "sha512-sa0RRbj53dovjc7wombHmVli9ZihXbXCQ2uH3TNm03DyvOSIQbxg+pbqDKrk2oxMK1rtLGVlKxcB9rrc6X5YjA==",
+      "dev": true,
+      "requires": {
+        "@sinonjs/formatio": "^3.1.0",
+        "@sinonjs/text-encoding": "^0.7.1",
+        "just-extend": "^4.0.2",
+        "lolex": "^2.3.2",
+        "path-to-regexp": "^1.7.0"
+      },
+      "dependencies": {
+        "@sinonjs/formatio": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.1.0.tgz",
+          "integrity": "sha512-ZAR2bPHOl4Xg6eklUGpsdiIJ4+J1SNag1DHHrG/73Uz/nVwXqjgUtRPLoS+aVyieN9cSbc0E4LsU984tWcDyNg==",
+          "dev": true,
+          "requires": {
+            "@sinonjs/samsam": "^2 || ^3"
+          }
+        }
+      }
+    },
     "nopt": {
       "version": "3.0.6",
       "resolved": "https://registry.npmjs.org/nopt/-/nopt-3.0.6.tgz",
@@ -944,7 +1034,8 @@
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       "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "resolve": {
       "version": "1.1.7",
@@ -988,20 +1079,44 @@
       "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=",
       "dev": true
     },
+    "simple-swizzle": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz",
+      "integrity": "sha1-pNprY1/8zMoz9w0Xy5JZLeleVXo=",
+      "requires": {
+        "is-arrayish": "^0.3.1"
+      }
+    },
     "sinon": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-2.4.1.tgz",
-      "integrity": "sha512-vFTrO9Wt0ECffDYIPSP/E5bBugt0UjcBQOfQUMh66xzkyPEnhl/vM2LRZi2ajuTdkH07sA6DzrM6KvdvGIH8xw==",
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-4.5.0.tgz",
+      "integrity": "sha512-trdx+mB0VBBgoYucy6a9L7/jfQOmvGeaKZT4OOJ+lPAtI8623xyGr8wLiE4eojzBS8G9yXbhx42GHUOVLr4X2w==",
       "dev": true,
       "requires": {
-        "diff": "3.3.1",
-        "formatio": "1.2.0",
-        "lolex": "1.6.0",
-        "native-promise-only": "0.8.1",
-        "path-to-regexp": "1.7.0",
-        "samsam": "1.3.0",
-        "text-encoding": "0.6.4",
-        "type-detect": "4.0.7"
+        "@sinonjs/formatio": "^2.0.0",
+        "diff": "^3.1.0",
+        "lodash.get": "^4.4.2",
+        "lolex": "^2.2.0",
+        "nise": "^1.2.0",
+        "supports-color": "^5.1.0",
+        "type-detect": "^4.0.5"
+      },
+      "dependencies": {
+        "has-flag": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+          "dev": true
+        },
+        "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"
+          }
+        }
       }
     },
     "sinon-chai": {
@@ -1036,6 +1151,14 @@
       "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
       "dev": true
     },
+    "storage-engine": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/storage-engine/-/storage-engine-2.0.1.tgz",
+      "integrity": "sha512-cf05Npq/l8HB+IyiZSxI4/XV87dM+zY5cNewfIzNjkLmXd+F7nzQayGAqf2wcGaoKdITcAqYrhPiwlCc5rHS3w==",
+      "requires": {
+        "eventemitter3": "^3.1.0"
+      }
+    },
     "string_decoder": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
@@ -1053,16 +1176,10 @@
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-    "text-encoding": {
-      "version": "0.6.4",
-      "resolved": "https://registry.npmjs.org/text-encoding/-/text-encoding-0.6.4.tgz",
-      "integrity": "sha1-45mpgiV6J22uQou5KEXLcb3CbRk=",
-      "dev": true
-    },
     "text-hex": {
-      "version": "0.0.0",
-      "resolved": "https://registry.npmjs.org/text-hex/-/text-hex-0.0.0.tgz",
-      "integrity": "sha1-V4+8haapJjbkLdF7QdAhjM6esrM="
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/text-hex/-/text-hex-1.0.0.tgz",
+      "integrity": "sha512-uuVGNWzgJ4yhRaNSiubPY7OjISw4sw4E5Uv0wbjp+OzcbmVU/rsT8ujgcXJhn9ypzsgr5vlzpPqP+MBBKcGvbg=="
     },
     "timers-ext": {
       "version": "0.1.2",
diff --git a/package.json b/package.json
index 0929754..9f4bc50 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "argh": "^0.1.4",
     "async": "^2.1.5",
     "cli-color": "^1.2.0",
-    "diagnostics": "^1.1.0",
+    "diagnostics": "^2.0.0",
     "emits": "^3.0.0",
     "htmlparser2": "^3.9.2",
     "uuid": "^3.0.0"