fix: use semver caret ranges

Author: David Brockman Smoliansky

package.json

@@ -12,24 +12,24 @@
   },
   "author": "Springworks",
   "devDependencies": {
-    "@springworks/test-harness": "1.5.5",
-    "babel-cli": "6.22.2",
-    "babel-eslint": "7.1.1",
-    "babel-preset-es2015-node4": "2.1.1",
-    "babel-register": "6.22.0",
-    "eslint": "3.17.1",
-    "eslint-config-springworks": "7.0.7",
-    "eslint-plugin-import": "2.2.0",
-    "eslint-plugin-mocha": "4.8.0",
-    "eslint-plugin-should-promised": "2.0.0",
-    "eslint-plugin-springworks": "2.0.1",
-    "greenkeeper-postpublish": "1.0.1",
-    "mocha": "3.2.0",
-    "mongoose": "4.8.6",
-    "semantic-release": "6.3.2"
+    "@springworks/test-harness": "^1.5.5",
+    "babel-cli": "^6.22.2",
+    "babel-eslint": "^7.1.1",
+    "babel-preset-es2015-node4": "^2.1.1",
+    "babel-register": "^6.22.0",
+    "eslint": "^3.17.1",
+    "eslint-config-springworks": "^7.0.7",
+    "eslint-plugin-import": "^2.2.0",
+    "eslint-plugin-mocha": "^4.8.0",
+    "eslint-plugin-should-promised": "^2.0.0",
+    "eslint-plugin-springworks": "^2.0.1",
+    "greenkeeper-postpublish": "^1.0.1",
+    "mocha": "^3.2.0",
+    "mongoose": "^4.8.6",
+    "semantic-release": "^6.3.2"
   },
   "dependencies": {
-    "lodash.mapvalues": "4.6.0"
+    "lodash.mapvalues": "^4.6.0"
   },
   "engines": {
     "node": ">=4",