Compilation error getting a std::pair<> on latest VS 2017 compiler

[pmhpereira]

• What is the issue you have?
  Compilation error on latest Visual Studio 2017 compiler.
  Works with Visual Studio 2015 compiler.

error C2679: binary '=': no operator found which takes a right-hand operand of type 
'nlohmann::basic_json<std::map,std::vector,std::string,bool,int64_t,uint64_t,double,std::allocator,nlohmann::adl_serializer>' 
(or there is no acceptable conversion)

• Please describe the steps to reproduce the issue. Can you provide a small but working code example?

int main()
{
    nlohmann::json jsonTest;

    std::pair<int, int> intPair(10, 20);

    jsonTest["intPair"] = intPair;
    intPair = jsonTest["intPair"]; // compilation error on this line
}

• What is the expected behavior?
  Same as intPair = jsonTest["intPair"].get<std::pair<int,int>>();

• Which compiler and operating system are you using? Is it a supported compiler?
  -- Building for: Visual Studio 15 2017
  -- The CXX compiler identification is MSVC 19.16.27027.1
  -- Microsoft (R) Build Engine version 15.9.21+g9802d43bc3 for .NET Framework
  -- Windows 10

• Did you use a released version of the library or the version from the develop branch?
  Release v3.5.0

• If you experience a compilation error: can you compile and run the unit tests?
  Can compile. No errors.

[pmhpereira]

Nevermind. Just found out about #958.
Will update all the code to start using .get<>() instead!
Thank you for this great lib.