Allow protected fields to be used as arguments

For example when we write in our fragment something like this:

@Arg
protected String protectedArg;

We’ll get an error:

Error:(6, 22) error: The @Arg annotated field ‘protectedArg’ in class ClassWithProtectedField has private or protected visibility…

I wonder why protected fields can’t be used as arguments. FragmentBuilder#injectArguments can access them because FragmentBuilder is in the same package as Fragment. I’ve created a test in https://github.com/pamalyshev/fragmentargs/commit/05350b0a472f381648af56647122edf84baa88cc

[sockeqwe]

Yes, I will add support for that

[sockeqwe]

Awesome, thanks!