Merge branch 'feature/child'

* feature/child:
  Update unexpected to 10.27.0, update unexpected-messy to 7.0.0 and drop it as a peer dep.
  Revert me: Update to unexpectedjs/unexpected-messy#ee9720dd98d30ca59f72ec93cd25bb5355ec654f
  Use expect.child and expect.exportAssertion.
  Revert me: Update to unexpectedjs/unexpected#d10718ac1a1e3dc90f3dadacafd391132e4ebc94

lib/unexpectedExpress.js

@@ -25,6 +25,8 @@ module.exports = {
     name: 'unexpected-express',
     version: require('../package.json').version,
     installInto: function (expect) {
+        expect = expect.child();
+
         var topLevelExpect = expect;
 
         expect.use(require('unexpected-messy'));
@@ -40,7 +42,7 @@ module.exports = {
             }
         });
 
-        expect.addAssertion([
+        expect.exportAssertion([
             '<function> to yield exchange satisfying <any>', // Please prefer this one because it does use 'to satisfy' semantics
             '<function> to yield exchange <any>'
         ], function (expect, subject, value) {

package.json

@@ -32,8 +32,7 @@
   "homepage": "https://github.com/unexpectedjs/unexpected-express",
   "peerDependencies": {
     "express": "*",
-    "unexpected": "^10.0.0",
-    "unexpected-messy": "^6.0.0"
+    "unexpected": "^10.27.0"
   },
   "devDependencies": {
     "body-parser": "1.0.2",
@@ -47,7 +46,7 @@
     "mocha": "2.3.3",
     "mock-fs": "4.0.0",
     "sinon": "1.17.3",
-    "unexpected": "10.26.0",
+    "unexpected": "10.27.0",
     "unexpected-documentation-site-generator": "^4.2.3",
     "unexpected-markdown": "1.7.1",
     "unexpected-stream": "2.0.4"
@@ -58,6 +57,6 @@
     "is-stream": "^1.1.0",
     "messy": "^6.6.1",
     "underscore": "1.6.0",
-    "unexpected-messy": "^6.0.0"
+    "unexpected-messy": "7.0.0"
   }
 }