Partial download resuming more conservative regarding server response.
A server has to explicitly return the Accept-Ranges header with a set value other than none.
CCPackageHelper added to extract currentOS method from CCPackageManager.
currentOS now a class method.
CCPackageDownloadManager will allow to resume paused package downloads when enqueue is used.
A failed package download will start over when used with enqueue.
Compilation error fixed, @class CCPackage added to manager delegate.
Some renaming and comments updated.
CCPackageManager's API changed.
An instance of a package can now be added to the manager to actually get managed without starting the whole installation life cycle.
Leading to a new method to start the download of a CCPackage instance which has already been added before.
The unzip delegate methods will return on the main thread now.
Some refactoring to attach installData with a method instead of code duplication.