* Fix a bug where some files sizes were sent as 0.
* Make FileManger.sizeForItem(at:) a UInt.
The docs specifically say that FileAttributeKey.size returns an unsigned long long so I have no idea why we were returning a Double here…
* Add the maxMediaUploadSize property on ClientProxy.
* Use the maxUploadSize to set a target video size and to show a file too big error.
* Refactor media upload parameter order.