Weekly github digest (Web Platform WG specs)

Issues
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* w3c/webcomponents (+0/-0/💬5)
  2 issues received 5 new comments:
  - #738 Custom pseudo-classes for host elements via shadow roots (:state) (2 by trusktr)
    https://github.com/w3c/webcomponents/issues/738 [needs concrete proposal] [shadow-dom] 
  - #187 Need callback for form submit data (3 by dflorey, tkent-google)
    https://github.com/w3c/webcomponents/issues/187 [custom-elements] [needs concrete proposal] [needs consensus] 

* w3c/manifest (+0/-0/💬11)
  2 issues received 11 new comments:
  - #821 Why does obtaining not check a MIME type? (10 by dmurph, dominickng, marcoscaceres, mgiuca, mikewest)
    https://github.com/w3c/manifest/issues/821 
  - #726 Install button on another domain (1 by photopea)
    https://github.com/w3c/manifest/issues/726 

* w3c/screen-orientation (+1/-0/💬0)
  1 issues created:
  - Apply an orientation lock rejects its own newly created promise (by smacleod)
    https://github.com/w3c/screen-orientation/issues/198 

* w3c/editing (+1/-0/💬0)
  1 issues created:
  - Match browser behaviors of execCommand(bold) (by saschanaz)
    https://github.com/w3c/editing/issues/243 




Repositories tracked by this digest:
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* https://github.com/w3c/webcomponents
* https://github.com/w3c/FileAPI
* https://github.com/w3c/filesystem-api
* https://github.com/w3c/gamepad
* https://github.com/w3c/manifest
* https://github.com/w3c/manifest-csp
* https://github.com/w3c/pointerlock
* https://github.com/w3c/push-api
* https://github.com/w3c/screen-orientation
* https://github.com/w3c/workers
* https://github.com/w3c/websockets
* https://github.com/w3c/webmessaging
* https://github.com/w3c/webstorage
* https://github.com/w3c/eventsource
* https://github.com/w3c/ime-api
* https://github.com/w3c/uievents
* https://github.com/w3c/uievents-code
* https://github.com/w3c/uievents-key
* https://github.com/w3c/clipboard-apis
* https://github.com/w3c/editing
* https://github.com/w3c/selection-api
* https://github.com/w3c/input-events
* https://github.com/w3c/microdata
* https://github.com/w3c/2dcontext
* https://github.com/w3c/DOM-Parsing
* https://github.com/w3c/dom