Added

This version adds support for PSR-7 v2.0. While we had previously added return type hints in Diactoros, there were a few cases where PSR-7 updated the interfaces to use void returns where we had not. As a result, this release represents a BC break for anybody extending our classes, as defining an extension that uses one of these methods with a mixed return type (or omitting the return type entirely) will result in a type error.

The interfaces affected were Psr\Http\Message\StreamInterface and Psr\Http\Message\UploadedFileInterface.

For consumers, this version should be entirely backwards compatible in usage. For those extending our classes, you will only run into issues when extending implementations of the above interfaces.