fix oauth flow, missing bucket for codelab elements, lots of other improvements

What's Changed

• Output devsite tables with vertical lines. by @DragonRider0o0 in #541
• Render categories to google-codelab's category attribute. by @DragonRider0o0 in #542
• Fix accidental escaped new line character. by @DragonRider0o0 in #543
• Update FORMAT-GUIDE.md by @walkerlj0 in #547
• Remove proto compilation from Travis config. by @cassierecher in #552
• Download images referenced within fragments. by @DragonRider0o0 in #550
• Refactor styles to use grid layout and move title before drawer in DOM order. by @DragonRider0o0 in #562
• Make drawer a nav element by @DragonRider0o0 in #565
• Send the codelab ID as new custom dimension. by @DragonRider0o0 in #566
• Adjust Report a mistake DOM order for accessibility by @DragonRider0o0 in #569
• Update focus behavior for accessibility by @DragonRider0o0 in #572
• Default to empty strings instead of null. by @DragonRider0o0 in #573
• Create Go module. by @cassierecher in #577
• Remove last-updated attribute. by @cassierecher in #578
• Add tests for util/util.go. by @cassierecher in #579
• Fix incorrect implementation of Empty for some nodes. by @cassierecher in #580
• Change default Markdown parser to Goldmark. by @cassierecher in #586
• Remove Blackfriday Markdown parsing by @cassierecher in #587
• Make allowlist non colored by @nicolasgarnier in #583
• Remove extraneous quotes from keyword attribute values by @DragonRider0o0 in #588
• Remove extraneous single quotes by @DragonRider0o0 in #590
• Move node.go to its own package. by @cassierecher in #592
• Nb2cl - automatically generate a codelab from a jupyter notebook by @mco-gh in #602
• Strip spaces from keywords and normalize keyword parsing by @DragonRider0o0 in #600
• Add missing import statements. by @DragonRider0o0 in #603
• Fix parser/gdoc/parse_test.go by @DragonRider0o0 in #604
• Create go.yml by @cassierecher in #598
• Add go vet run to Actions. by @cassierecher in #606
• Remove test command from Makefile. by @cassierecher in #607
• Remove lint command from Makefile. by @cassierecher in #608
• Add tests for isBold (Markdown variant.) by @cassierecher in #609
• Add tests for Markdown parsing. by @cassierecher in #610
• Add more MD parsing tests. by @cassierecher in #612
• More MD parsing tests by @cassierecher in #613
• Add tests for YoutubeNode. by @cassierecher in #595
• Add tests for InfoboxNode. by @cassierecher in #594
• Add tests for IframeNode. by @cassierecher in #596
• Add tests for SurveyNode. by @cassierecher in #597
• add insert option to nb2cl command by @mco-gh in #616
• Remove mutex guarding parsers set. by @cassierecher in #617
• More MD parsing tests by @cassierecher in #614
• More node tests by @cassierecher in #619
• Assorted cleanup on MD parsing's html.go. by @cassierecher in #620
• Refactor and add cases to tests of types/meta. by @cassierecher in #623
• More tests for nodes package. by @cassierecher in #622
• Refactor MutateType. by @cassierecher in #625
• More (the last?) tests for nodes. by @cassierecher in #626
• Create separate context.go file and add tests for ContextTime. by @cassierecher in #628
• Add more tests for types/ by @cassierecher in #629
• Fix issue where test would fail in some environments. by @cassierecher in #631
• Add tests for gdoc parsing. by @cassierecher in #634
• Remove full_width metatag and class from DevSite HTML. by @DragonRider0o0 in #636
• Restructure google_codelab for readability. by @DragonRider0o0 in #637
• Fix mobile controls. by @DragonRider0o0 in #638
• Prepare google_codelab for extension. by @DragonRider0o0 in #640
• Add tests for CSS handling. by @cassierecher in #641
• Add tests for gdoc parsing's stringifyNode. by @cassierecher in #642
• Add more CSS handling tests. by @cassierecher in #643
• Add more tests for gdoc parsing. by @cassierecher in #644
• Add some tests for HTML rendering. by @cassierecher in #646
• Refactor NewImageNode to access more fields. by @cassierecher in #647
• More HTML rendering tests by @cassierecher in #648
• Render project and book metadata. by @DragonRider0o0 in #649
• Replace template data generation with embed. by @cassierecher in #650
• Use the rendered step title if it exists. by @DragonRider0o0 in #651
• Render step attribute and step title. by @DragonRider0o0 in #652
• Render original_source conditionally. by @DragonRider0o0 in #657
• Remove <devsite-user>. by @DragonRider0o0 in #656
• Fix cmd/export_test.go. by @DragonRider0o0 in #658
• Render last-updated and duration attributes. by @DragonRider0o0 in #666
• Re-write google.com redirector URLs. by @shawnbuso in #667
• Unescape URLs that came from the google.com redirector. by @shawnbuso in #668
• Re-add last-updated as an ignored prefix in export_test by @shawnbuso in #669
• Remove references to DevSite stylesheets. by @DragonRider0o0 in #672
• Remove references to Devsite Markdown processor by @DragonRider0o0 in #673
• Remove badge-path from <google-codelab-about> by @DragonRider0o0 in #674
• Change Meta.BadgePath to Meta.Extra.badge. by @DragonRider0o0 in #675
• Fix layout for mobile controls by @DragonRider0o0 in #676
• Remove devsite logic from claat by @DragonRider0o0 in #680
• Improve codelab layout on mobile devices. by @DragonRider0o0 in #685
• Remove non-existing selector ::content by @devbridie in #688
• Snake case metadata table field names by @DragonRider0o0 in #698
• Add DartPad.dev to the iframe allow list by @domesticmouse in #654
• install go module with go install instead of go get by @j143 in #693
• Fix byte index out of range panic for likely error responses. by @shawnbuso in #713
• Use eventHandler.listen. by @DragonRider0o0 in #718
• Add disconnectedCallback. by @DragonRider0o0 in #722
• Simplify page URL hash logic by @DragonRider0o0 in #725
• Fix bug with image bytes length detection. by @shawnbuso in #719
• Improve mobile codelab title. by @DragonRider0o0 in #726
• Fix image extension parsing. by @DragonRider0o0 in #729
• Prevent reloads when setting hash. by @DragonRider0o0 in #731
• Code cleanup. by @DragonRider0o0 in #792
• fix oob oauth to use localhost and update elements bucket by @mco-gh in #798
• Use exact match with IframeAllowlist by @DragonRider0o0 in #799

New Contributors

• @walkerlj0 made their first contribution in #547
• @devbridie made their first contribution in #688
• @domesticmouse made their first contribution in #654
• @j143 made their first contribution in #693

Full Changelog: v2.2.4...v2.2.5