Import latest app updates from streamline

An updated set of source files and initialization was provided by streamline to
address issues observed during initial testing. These files have been updated in
order to generate a new set of app images.

docker/streamline-src/vendor/guzzlehttp/promises/src/TaskQueue.php

@@ -1,71 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace GuzzleHttp\Promise;
-
-/**
- * A task queue that executes tasks in a FIFO order.
- *
- * This task queue class is used to settle promises asynchronously and
- * maintains a constant stack size. You can use the task queue asynchronously
- * by calling the `run()` function of the global task queue in an event loop.
- *
- *     GuzzleHttp\Promise\Utils::queue()->run();
- *
- * @final
- */
-class TaskQueue implements TaskQueueInterface
-{
-    private $enableShutdown = true;
-    private $queue = [];
-
-    public function __construct(bool $withShutdown = true)
-    {
-        if ($withShutdown) {
-            register_shutdown_function(function (): void {
-                if ($this->enableShutdown) {
-                    // Only run the tasks if an E_ERROR didn't occur.
-                    $err = error_get_last();
-                    if (!$err || ($err['type'] ^ E_ERROR)) {
-                        $this->run();
-                    }
-                }
-            });
-        }
-    }
-
-    public function isEmpty(): bool
-    {
-        return !$this->queue;
-    }
-
-    public function add(callable $task): void
-    {
-        $this->queue[] = $task;
-    }
-
-    public function run(): void
-    {
-        while ($task = array_shift($this->queue)) {
-            /** @var callable $task */
-            $task();
-        }
-    }
-
-    /**
-     * The task queue will be run and exhausted by default when the process
-     * exits IFF the exit is not the result of a PHP E_ERROR error.
-     *
-     * You can disable running the automatic shutdown of the queue by calling
-     * this function. If you disable the task queue shutdown process, then you
-     * MUST either run the task queue (as a result of running your event loop
-     * or manually using the run() method) or wait on each outstanding promise.
-     *
-     * Note: This shutdown will occur before any destructors are triggered.
-     */
-    public function disableShutdown(): void
-    {
-        $this->enableShutdown = false;
-    }
-}