Weekly github digest (HTML specs)

Issues
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* w3c/html (+3/-0/💬5)
  3 issues created:
  - Proposal: <button once="true" /> attribute (by NickCraver)
    https://github.com/w3c/html/issues/1692 
  - HTMLVideoElement needs source image width and height properties (by juj)
    https://github.com/w3c/html/issues/1691 
  - hyperlink auditing requires use of unsafe HTTP method (by FreelanceToIndia1)
    https://github.com/w3c/html/issues/1690 

  3 issues received 5 new comments:
  - #1456 Privacy concern with ping attribute (2 by npdoty, cynthia)
    https://github.com/w3c/html/issues/1456 [privacy] [wide review] 
  - #375 VSYNC API: Support for VSYNC OFF / 120Hz+ / variable refresh displays / etc (2 by mdrejhon)
    https://github.com/w3c/html/issues/375 [Feature request] [Needs incubation] [needs tests] 
  - #1692 Proposal: <button once="true" /> attribute (1 by gaui)
    https://github.com/w3c/html/issues/1692 

* w3c/html-aam (+1/-0/💬2)
  1 issues created:
  - There's no mapping for the area element (by dd8)
    https://github.com/w3c/html-aam/issues/176 

  1 issues received 2 new comments:
  - #176 There's no mapping for the area element (2 by asurkov, dd8)
    https://github.com/w3c/html-aam/issues/176 



Pull requests
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* w3c/html-aam (+1/-0/💬1)
  1 pull requests submitted:
  - Update UIA mappings for sub and sup elements (by melanierichards)
    https://github.com/w3c/html-aam/pull/177 

  1 pull requests received 1 new comments:
  - #177 Update UIA mappings for sub and sup elements (1 by melanierichards)
    https://github.com/w3c/html-aam/pull/177 


Repositories tracked by this digest:
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* https://github.com/w3c/html
* https://github.com/w3c/html-aam
* https://github.com/w3c/html-aria
* https://github.com/w3c/html-extensions
* https://github.com/w3c/html-landscape
* https://github.com/w3c/html-reference
* https://github.com/w3c/aria-in-html