build: Update various dependencies to latest

 argsparser  0.0.6  →  0.0.7
 co          3.0.6  →  4.6.0
 instalbul   0.3.9  →  0.4.5 [optional]
 timekeeper  0.0.4  →  1.0.0 [dev]

The 'co()' function now returns a Promise. "Thunks" are still
supported, though require using co.wrap() instead.

Fixes #127

Author: Krinkle

lib/child.js

@@ -124,8 +124,10 @@ if (generators.support) {
         if (generators.isGeneratorFn(callback)) {
             fn = function(assert) {
                 stop();
-                co(callback).call(this, assert, function(err) {
-                    if (err) return console.log(err.stack)
+                co.wrap(callback).call(this, assert).then(function() {
+                    start();
+                }).catch(function (err) {
+                    console.log(err.stack);
                     start();
                 });
             };

package.json

@@ -38,19 +38,19 @@
     "lint": "eslint ."
   },
   "dependencies": {
-    "argsparser": "^0.0.6",
+    "argsparser": "^0.0.7",
     "cli-table": "^0.3.0",
-    "co": "^3.0.6",
+    "co": "^4.6.0",
     "qunitjs": "1.23.1",
     "tracejs": "^0.1.8",
     "underscore": "^1.6.0"
   },
   "devDependencies": {
     "chainer": "^0.0.5",
     "eslint": "^3.17.1",
-    "timekeeper": "^0.0.4"
+    "timekeeper": "^1.0.0"
   },
   "optionalDependencies": {
-    "istanbul": "0.3.9"
+    "istanbul": "0.4.5"
   }
 }

test/fixtures/generators-test.js

@@ -2,5 +2,5 @@
 /* global thunk */
 test('generators', function* (assert) {
     var data = yield thunk();
-    assert.deepEqual(data, {a: 1}, 'woks');
+    assert.deepEqual(data, {a: 1}, 'works');
 });