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/league/commonmark/src/Reference/ReferenceMap.php

@@ -1,77 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of the league/commonmark package.
- *
- * (c) Colin O'Dell <colinodell@gmail.com>
- *
- * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
- *  - (c) John MacFarlane
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace League\CommonMark\Reference;
-
-use League\CommonMark\Normalizer\TextNormalizer;
-
-/**
- * A collection of references, indexed by label
- */
-final class ReferenceMap implements ReferenceMapInterface
-{
-    /** @psalm-readonly */
-    private TextNormalizer $normalizer;
-
-    /**
-     * @var array<string, ReferenceInterface>
-     *
-     * @psalm-readonly-allow-private-mutation
-     */
-    private array $references = [];
-
-    public function __construct()
-    {
-        $this->normalizer = new TextNormalizer();
-    }
-
-    public function add(ReferenceInterface $reference): void
-    {
-        // Normalize the key
-        $key = $this->normalizer->normalize($reference->getLabel());
-        // Store the reference
-        $this->references[$key] = $reference;
-    }
-
-    public function contains(string $label): bool
-    {
-        $label = $this->normalizer->normalize($label);
-
-        return isset($this->references[$label]);
-    }
-
-    public function get(string $label): ?ReferenceInterface
-    {
-        $label = $this->normalizer->normalize($label);
-
-        return $this->references[$label] ?? null;
-    }
-
-    /**
-     * @return \Traversable<string, ReferenceInterface>
-     */
-    public function getIterator(): \Traversable
-    {
-        foreach ($this->references as $normalizedLabel => $reference) {
-            yield $normalizedLabel => $reference;
-        }
-    }
-
-    public function count(): int
-    {
-        return \count($this->references);
-    }
-}