v8

• Improved EAB/HMAC flow for ACME.
• Improved Prometheus metrics.
• Enable hero preloading for tags.
• Update dependencies to latest versions.

Merge pull request #531 from ampproject/master

Release version 7 of AMP cache transforms

v6: Merge pull request #511 from ampproject/master

• Add ACME EAB support.
• Allow LTS runtime in CSP.
• Improve CLS with font-display: optional for Google Fonts.
• Fix conflict with AMP Optimizer's esmModulesEnabled option.
• Allow 'px' in img/amp-img/amp-anim width, when generating srcset.

v5

Image preloading & img tag SSR.

v4: Merge pull request #460 from ampproject/master

Snapshot release v4

v3: Merge pull request #386 from ampproject/master

Snapshot release v3

v2: Merge pull request #321 from ampproject/master

Snapshot version 2 from master.