Weekly github digest (Web Performance WG specs)

Issues
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* w3c/performance-timeline (+1/-0/💬0)
  1 issues created:
  - Using a single observer instance throughout the application lifetime (by vigneshshanmugam)
    https://github.com/w3c/performance-timeline/issues/160 

* w3c/resource-timing (+0/-0/💬1)
  1 issues received 1 new comments:
  - #190 Expose JavaScript code caching information in PerformanceResourceTiming (1 by rniwa)
    https://github.com/w3c/resource-timing/issues/190 [enhancement] [whiteboard] 

* w3c/page-visibility (+0/-1/💬8)
  3 issues received 8 new comments:
  - #59 The spec's definition of hidden is unclear and should be updated to better account for mobile use cases (3 by philipwalton, rniwa)
    https://github.com/w3c/page-visibility/issues/59 [question] 
  - #58 Switching tabs in Safari for iOS still displays the elements that should be hidden (3 by philipwalton, rniwa, yoavweiss)
    https://github.com/w3c/page-visibility/issues/58 
  - #56 Lack of clarity on how occlusion behavior interacts with iframes (2 by plehegar)
    https://github.com/w3c/page-visibility/issues/56 [enhancement] 

  1 issues closed:
  - Switching tabs in Safari for iOS still displays the elements that should be hidden https://github.com/w3c/page-visibility/issues/58 

* w3c/preload (+2/-0/💬9)
  2 issues created:
  - it is unclear which all as attribute values should be supported (by smaug----)
    https://github.com/w3c/preload/issues/145 
  - Request for dynamic preload like font URL. (by Faisal-Manzer)
    https://github.com/w3c/preload/issues/144 

  2 issues received 9 new comments:
  - #145 it is unclear which all as attribute values should be supported (5 by domfarolino, smaug----, yoavweiss)
    https://github.com/w3c/preload/issues/145 
  - #144 Request for dynamic preload like font url in CSS. (4 by domfarolino, yoavweiss)
    https://github.com/w3c/preload/issues/144 

* w3c/server-timing (+0/-0/💬1)
  1 issues received 1 new comments:
  - #43 add start time to distinguish between cached and active entries (1 by hauleth)
    https://github.com/w3c/server-timing/issues/43 



Pull requests
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* w3c/beacon (+1/-1/💬0)
  1 pull requests submitted:
  - Set the keepalive flag when extracting the body (by ricea)
    https://github.com/w3c/beacon/pull/66 

  1 pull requests merged:
  - Set the keepalive flag when extracting the body
    https://github.com/w3c/beacon/pull/66 

* w3c/requestidlecallback (+0/-0/💬1)
  1 pull requests received 1 new comments:
  - #88 Define algorithm for determining whether high priority work exists. (1 by rmcilroy)
    https://github.com/w3c/requestidlecallback/pull/88 


Repositories tracked by this digest:
-----------------------------------
* https://github.com/w3c/hr-time
* https://github.com/w3c/performance-timeline
* https://github.com/w3c/resource-timing
* https://github.com/w3c/navigation-timing
* https://github.com/w3c/user-timing
* https://github.com/w3c/beacon
* https://github.com/w3c/page-visibility
* https://github.com/w3c/preload
* https://github.com/w3c/resource-hints
* https://github.com/w3c/requestidlecallback
* https://github.com/w3c/device-memory
* https://github.com/w3c/paint-timing
* https://github.com/w3c/longtasks
* https://github.com/w3c/server-timing