Version 0.5.2

• Constructors that return Self can now be added to classes. #83
  • Default is no longer required to be implemented on classes, however, a
    constructor must be specified if you want to construct the class from PHP.
  • Constructors can return Self or Result<Self, E>, where
    E: Into<PhpException>.
• Added FromZendObject and IntoZendObject traits. #74
• Added #[derive(ZvalConvert)] derive macro. Derives IntoZval and FromZval
  on arbitrary structs and enums. #78
• Added ZBox<T>, similar to Box<T>, to allocate on the Zend heap. #94
• Changed execution data functions to take mutable references. #100
• &mut T is now valid as a function parameter. #100

Thanks to the contributors for this release:

• @davidcole1340
• @vodik