0.4.0

The "adapter kit" release (docs/spec/16, wave A): what every framework adapter copied is one thing in the core, and
the sitemap reader is its own package. Adapters of this wave: doctrine 0.3.0, symfony-bundle 0.4.0, laravel 0.5.0,
yii2 0.2.0, sitemap 0.1.0. Upgrade the adapter, not the core alone: an adapter of the previous wave imports
classes that moved.

Added

• Config knows key_file.enabled (alias of serve_key_file, which still wins when both are set),
  key_file.cache_max_age (keyFileMaxAge), debounce.store (debounceStore) and http.client (httpClient),
  in fromArray(), fromEnv() (INDEXNOW_KEY_FILE_ENABLED, INDEXNOW_KEY_FILE_CACHE_MAX_AGE,
  INDEXNOW_DEBOUNCE_STORE, INDEXNOW_HTTP_CLIENT), with() and OPTIONS (dotted keys only).
  Config::keyFileHeaders() is the key file response headers (max-age, Vary: Host with a hosts map);
  Config::serveKeyFileFrom(array $raw) is the serve_key_file / key_file.enabled rule over a raw array, for the
  adapter code that runs before a Config exists (a route registered at boot, a check over the raw options).
• Adapter\ConfigFactory: the raw framework array to Config path of every adapter — defaults merged under
  the raw values, dispatch: auto resolved by a closure, the mode checked against what the adapter delivers,
  base_url required for worker modes, an adapter post-check; build() throws, load() never does (warning on
  unknown keys, critical + disabled Config on an invalid value). docs/adapters.md §4.
• Factories with one source of the error texts: Http\TransportFactory::lazy() / psr18(),
  Debounce\DebounceStoreFactory::fromConfig(), Dispatch\DispatcherFactory::fromConfig(), and fromConfig() on
  Collector, TokenBucket, AttributeUrlResolver, KeyFileResponder. IndexNowKit::create() is built on them.
• Console\ClassNameResolver (the class argument of submit-<subject>/explain), Check\DebounceStoreCheck (the
  debounce line of check over an adapter probe), Url\ArrayResolverLocator(locate:, hint:) (the container-backed
  resolver locator of every adapter), Url\RuleAwareUrlResolverInterface (a custom resolver GuardedUrlResolver
  guards per rule), IndexNowKit::submitAll() / urlsForAll() (de-duplicated across the set),
  CollectorInterface::count(). Check\CheckReport::ok()/warning()/error() are public API.

Changed

• Removed: the sitemap reader. IndexNowKit::sitemap(), the $sitemap parameter of the constructor and of
  create(), Console\SitemapRunner, Console\SitemapOptions, Check\SitemapSpoolCheck and Sitemap\* moved to
  indexnowkit/sitemap (composer require indexnowkit/sitemap; the adapters require it). Console\Vocabulary::$sitemapUrlOption is gone: the option name
  is an argument of Sitemap\Console\SitemapRunner. The core no longer suggests ext-xmlreader/ext-zlib; the
  test router serves /large-document.xml[.gz] instead of /sitemap.xml[.gz]. Migration table in the sitemap
  package changelog.
• Removed: Result::urlsOf() (deprecated since 0.2.0): Result::retryableUrls() or Result::urlsWhere().
• IndexNowKit::create() with a dispatch outside sync/none and no $dispatcher throws
  ConfigurationException (it silently used SyncDispatcher before).
• Config::fromArray() reads booleans with filter_var: the strings "false"/"0" are false (they were true).
• ResultRenderer::summary() says Nothing submitted: the source yielded no URL.; transport docblocks speak of
  documents, not sitemaps.
• serve_key_file is deprecated in favour of key_file.enabled (both work; the explicit serve_key_file wins).
• Dev tooling: phpstan runs on every CI flavour; phpstan/* floors are the current releases.