1.0-beta3

See unreleased 1.0 changelog and the in-progress milestone. See also commits since 1.0-beta2.

See the 1.0 Beta 3 blog post for more info.

See also 1.0-beta3-built tag which facilitates installation of plugin build via submodule, Composer, etc.

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• Fix inability to move link element due to assigned parent. See #1322. Props westonruter.
• Fix stretched images in Twenty Seventeen them and Gutenberg. See #1321, #1281, #1237. Props hellofromtonya.
• Fix image dimension extractor so it does not disregard duplicate images. See #1314. Props lukas9393.
• Remove redundant version from composer.json and add PHP version requirement. See #1333, #1328, #1334, #1332. Props swissspidy.
• Store validation errors in order of occurrence in document. See #1335. Props westonruter.
• Add .editorconfig file. See #1336, #51. Props swissspidy.
• Update i18n to make use of updated WP-CLI command. See #1329, #1327, #1341, #1345, #1393. Props swissspidy, felixarntz, westonruter.
• Use all eligible post types when all_templates_supported is selected. See #1338, #1302, #1344. Props hellofromtonya, westonruter.
• Respect default AMP enabled status when creating a new post in Gutenberg. See #1339. Props hellofromtonya.
• Normalize 'ver' query param in script/style validation errors to prevent recurrence after accepted. See #1346. Props westonruter.
• Add missing tabindex attribute to lightbox images. See #1350. Props amedina.
• Detect ineffectual post-processor response cache due to high MISS rates and auto-disable. See #1325, #1239. Props hellofromtonya, westonruter.
• Update the validator spec version to 720 and AMP v1534879991178; add support for reference points. See #1315, #1386, #1330. Props westonruter.
• Fix form sanitizer's handling of relative actions by making them absolute. See #1352, #1349. Props ricardobrg.
• Skip Server-Timing header if not WP_DEBUG and user cannot manage_options. See #1354. Props westonruter.
• Fetch CSS over HTTP when URL lacks extension; convert font CDN stylesheets @import's to convert to links instead of fetching. See #1357, #1317. Props westonruter.
• Add WP-CLI command for testing the AMP compatibility of an entire site. See #1183, #1007. Props kienstra, westonruter.
• Display when validation results are stale due to active theme/plugin changes. See #1375. Props westonruter.
• Fix displaying of expected notices when theme support enabled by theme. See #1374, #1358. Props westonruter.
• Fix handling responses to form submissions from an AMP Cache. See #1382, #1356.
• Replace Gutenberg's deprecated isCleanNewPost selector. See #1387. Props miina.
• Updates php-css-parser to include fix for parsing calc() with negative values. See #1392. Props westonruter.
• Add embed support for Twitter timelines via new amp-twitter attributes. See #1396. Props felixarntz.
• Add error type filters on validation error and invalid URL screens. See #1373. Props kienstra.