Newer php fixes#132

Draft

Firehed wants to merge 9 commits intomasterfrom

newer-php-fixes

Commits on Sep 19, 2018

Add PATCH support (#87)
Firehed
committed
Define renderResponse conditionally to work around some kind of weird interaction/regression introduced in phpunit 7.3
Firehed
committed

Commits on Oct 24, 2018

Allow Diactoros 1.3 or 2.0 (#88)
Firehed
authored

Commits on Feb 12, 2019

Fixes for PHPUnit 8 (#94)
Firehed
authored