Use AnyObject instead of class.

[niw]

Problem

Using the latest Swift to build Swift runtime will emit warnings about class keyword
which is deprecated.

warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead

Solution

Use AnyObject instead.

[parrt]

@hanjoes ?

[hanjoes]

we should be able to merge this. AnyObject provides better compatiblity and class could be removed in future swift releases. @parrt

[parrt]

thanks @hanjoes and happy new year!

[hanjoes]

thanks @hanjoes and happy new year!

Happy new year to you too!