Ditch guzzlehttp/psr7 because they don't provide psr/http-factory-implementation in any stable release (see guzzle/psr7#327).
http-interop/http-factory-guzzle does.
Maybe we'll re-use guzzlehttp/psr7 once a stable release is released.
Also use phpstan/extension-installer to avoid declaring PHPStan extension manually.
Coverage remained the same at 96.257% when pulling 3e9bcff49d94996463172292b2b32f60aba3e974 on fix/http-factory into fedf2e0c849376efd5af7fedc68f6a5099a5c8a5 on master.
Ditch
guzzlehttp/psr7
because they don't providepsr/http-factory-implementation
in any stable release (see guzzle/psr7#327).http-interop/http-factory-guzzle
does.Maybe we'll re-use
guzzlehttp/psr7
once a stable release is released.Also use
phpstan/extension-installer
to avoid declaring PHPStan extension manually.