Network manager leaking memory

[devwaseem]

The network manager holds a strong reference to its delegates. so the class assigned as a delegate to network manager is never released due to strong memory reference. I'm attaching profiler screenshots supporting for my issue.

I opened the DetailsViewController 3 times while profiling, you can see 3 persistent and 0 transient objects. this means the DetailViewController is never released.

This screenshot is from memory Graph debugger indicating the leaked objects

[devwaseem]

Assign me. I'll make a PR solving this issue