Expand allowed dependency versions to all API compatible versions

Fixes #171
Fixes #170
Fixes #153
Fixes #149
Fixes #133

.travis.yml

@@ -1,11 +1,9 @@
 language: node_js
 node_js:
   - "node"
-  - "iojs"
+  - "8"
   - "6"
   - "5"
   - "4"
-  - "0.12"
-  - "0.10"
 script: make test-coveralls
 sudo: false

package.json

@@ -30,23 +30,23 @@
     "Adam Moss (https://github.com/adam-moss)"
   ],
   "dependencies": {
-    "js-yaml": "3.6.1",
-    "lcov-parse": "0.0.10",
-    "log-driver": "1.2.5",
-    "minimist": "1.2.0",
-    "request": "2.79.0"
+    "js-yaml": "^3.6.1",
+    "lcov-parse": "^0.0.10",
+    "log-driver": "^1.2.5",
+    "minimist": "^1.2.0",
+    "request": "^2.79.0"
   },
   "devDependencies": {
-    "istanbul": "0.4.5",
+    "istanbul": "^0.4.5",
     "jshint": "2.9.3",
-    "mocha": "3.2.0",
-    "mocha-lcov-reporter": "1.2.0",
-    "should": "9.0.2",
-    "sinon-restore": "1.0.1",
-    "snyk": "1.23.3"
+    "mocha": "^3.2.0",
+    "mocha-lcov-reporter": "^1.2.0",
+    "should": "^9.0.2",
+    "sinon-restore": "^1.0.1",
+    "snyk": "^1.23.3"
   },
   "engines": {
-    "node": ">=0.8.6"
+    "node": ">=4.0.0"
   },
   "main": "index.js",
   "directories": {