Make it easier to distinguish between dropbox.js postMessage messages and an app's own messages.
Update the release guide to use git-over-https.
Fix some edge cases in URL computation for the Redirect and Popup auth drivers.
Doc fixes.
Make use of api{1-30}.dropbox.com.
Fixed typo in code sample.
Pulled out some Cakefile bits into separate files in tasks/.
Update dropbox.js version referenced by sample code.
Updated versions for vendored libraries in checkbox.js sample.
OAuth 2 for the Cordova driver.
Minor test cleanup.
Update cordova testing docs.
Doc fixes.
Explicitly return true from cancelable event listeners in snippets.
Use the official OAuth 2 redirect receiver in the Cordova driver.
Test for file-not-found in Client#readFile.
Bump Cakefile for node 0.11 compatibility.
Fix duplicate header bug.

This fixes a bug where Chrome will sometimes double report the x-dropbox-metadata header, making the metadata JSON parsing more robust.
Merge duplicate header bug workaround from 'boushley/stable'.
Move all XHR tests to fast/, enable them in Web Workers, add test for 2x-headers bug.