Added length property to Ember.Map
A small change to make the assertion raised when Handlebars isn't found more clear about how to fix the problem
Actions should be unregistered when destroying virtual views
fallback for browsers that don't support domElement.outerHTML

At least Firefox browsers < version 11 do not support the outerHTML
property for DOM elements. The fallback is to use
XMLSerializer.serializeToString when outerHTML is not available.
Avoid parent's implicit index route clobbering child's explicit index.

Fixes emberjs/ember.js#2318.
Merge pull request #2219 from tchak/computed-macros

add more computed macros
Ensure lookup returns same object when using different formats
Merge pull request #2324 from johnmcdowall/master

A small change to make the assertion raised when Handlebars isn't found more clear about how to fix the problem
Merge pull request #2333 from fivetanley/firefox-10-weird-bug

fallback for browsers that don't support domElement.outerHTML
Actions should be unregistered when destroying virtual views
Check Handlebars compiler revision instead of version
Clarify when Ember.Router#model is executed
Removed unused system/router.js function
Better error message for developers upgrading Ember apps

Since calling .initialize() is no longer required, the error
message makes more sense when you explain to them that they
should remove their explicit call to .initialize() to fix it,
rather than looking for a second call.
Merge pull request #2357 from eviltrout/patch-1

Better error message for developers upgrading Ember apps
Merge pull request #2353 from machty/remove-unused-router-code

Removed unused system/router.js function
Merge pull request #2352 from JasonKriss/route-docs

Clarify when Ember.Router#model is executed
Merge pull request #2350 from twinturbo/controller-for-fix

Ensure lookup returns same object when using different formats
Merge pull request #2322 from JasonKriss/patch-1

Check Handlebars compiler revision instead of version
Merge pull request #2321 from sebastianseilund/action-unregister

Actions should be unregistered when destroying virtual views