guzzlehttp/guzzle 7.15.0 on PHP Packagist

Added Multiplexing::NONE support as a client, cURL multi handler, and conditional request option

Adjusted guzzlehttp/psr7 version constraint to ^2.13
Use locale-independent ASCII folding for all case normalization and comparison
Bound cURL upload reads to the declared Content-Length
Sanitize the cURL error text exposed through exception handler context
Fail closed when a named cURL multi connection cap cannot be applied
Reject the request-level CURLOPT_SHARE cURL option when named connection caps are configured
Strengthen old-libcurl SOCKS isolation for raw CURLOPT_PRE_PROXY and opaque share handles
Isolate HTTP proxy tunnels from opaque shared connection caches
Trigger runtime deprecations for previously deprecated functionality in 7.1.0

Deprecated Utils::jsonDecode() and Utils::jsonEncode() in favor of native JSON functions
Deprecated passing CURLMOPT_PIPELINING in the cURL multi handler options array
Deprecated passing CURLOPT_PROXYHEADER without cURL proxy header separation support

Defer cURL requests created from multi callbacks until native execution unwinds
Fail synchronous waits from native cURL callbacks promptly instead of self-deadlocking
Guard cURL multi handle removal against progress callbacks re-entering the handler
Scope promise waits on the cURL multi handler to the awaited transfer
Strip Content-Length and Transfer-Encoding when redirects discard the request body
Stop re-applying the delay request option to followed redirects