v6.0.0

The 32-bit prebuild was restored in 6.0.1.

Changed

• Breaking: drop Node.js 10 and 12 (9c7e4fa) (Vincent Weevers)
• Breaking: drop 32-bit prebuild (cb1fdec) (Vincent Weevers)
• Replace use of std::ptr_fun (8f5ac34) (Vincent Weevers)