Weekly github digest (Web Platform WG specs)

Issues
------
* w3c/webcomponents (+2/-0/💬10)
  2 issues created:
  - [Template Instantiation] rendered version of proposal is missing all mustache syntax (by fergald)
    https://github.com/w3c/webcomponents/issues/755 
  - How to clean up (undefine) custom elements? (by trusktr)
    https://github.com/w3c/webcomponents/issues/754 

  2 issues received 10 new comments:
  - #509 The is="" attribute is confusing? Maybe we should encourage only ES6 class-based extension. (7 by hax, FND, OvermindDL1, oleersoy)
    https://github.com/w3c/webcomponents/issues/509 [custom-elements] 
  - #754 Cleaning up (undefining) custom elements? (3 by trusktr, caridy, domenic)
    https://github.com/w3c/webcomponents/issues/754 

* w3c/manifest (+1/-0/💬30)
  1 issues created:
  - Should appinstalled and beforeinstallprompt events be optional? (by mgiuca)
    https://github.com/w3c/manifest/issues/699 

  8 issues received 30 new comments:
  - #693 Add a way to query whether there is a UA-provided back button (13 by dominickng, fchristant, kenchris, comp615, aarongustafson, mgiuca)
    https://github.com/w3c/manifest/issues/693 
  - #646 Clarify rule of navigating away from the navigation scope (7 by dominickng, g-ortuno, mgiuca, kenchris)
    https://github.com/w3c/manifest/issues/646 
  - #689 manifest.webmanifest or manifest.json (3 by alrra, mgiuca, nhoizey)
    https://github.com/w3c/manifest/issues/689 
  - #690 Manifast and Service Worker updateViaCache (2 by mgiuca, kenchris)
    https://github.com/w3c/manifest/issues/690 
  - #695 Add a way to explicitly colour the standalone window's title bar (2 by mgiuca, kenchris)
    https://github.com/w3c/manifest/issues/695 
  - #673 Display mode "standalone" inconsistently handled by browsers (1 by comp615)
    https://github.com/w3c/manifest/issues/673 
  - #666 Create test suite to check Web App Manifest feature support (1 by Honry)
    https://github.com/w3c/manifest/issues/666 
  - #699 Should appinstalled and beforeinstallprompt events be optional? (1 by kenchris)
    https://github.com/w3c/manifest/issues/699 

* w3c/editing (+1/-0/💬6)
  1 issues created:
  - remove document.designMode (by yoichio)
    https://github.com/w3c/editing/issues/177 

  2 issues received 6 new comments:
  - #176 contenteditable-disabled (3 by johanneswilm, Reinmar, yoichio)
    https://github.com/w3c/editing/issues/176 
  - #177 remove document.designMode (3 by rniwa, ctzsm, yoichio)
    https://github.com/w3c/editing/issues/177 



Pull requests
-------------
* w3c/manifest (+4/-2/💬11)
  4 pull requests submitted:
  - Editorial: Moved non-normative text into a note. (by mgiuca)
    https://github.com/w3c/manifest/pull/702 
  - Breaking: Change requirement to block off-scope navigation. (by mgiuca)
    https://github.com/w3c/manifest/pull/701 
  - Editorial: Attempt to fix the navigation scope monkey patching. (by mgiuca)
    https://github.com/w3c/manifest/pull/700 
  - Add ctor params to BeforeInstallPromptEvent (by lukebjerring)
    https://github.com/w3c/manifest/pull/698 

  6 pull requests received 11 new comments:
  - #563 feat: add support for adaptive icons (3 by mgiuca, kenchris)
    https://github.com/w3c/manifest/pull/563 
  - #657 Add a 'masking' purpose, for allowing the UA to supercompose such icons (2 by kenchris)
    https://github.com/w3c/manifest/pull/657 
  - #701 Breaking: Change requirement to block off-scope navigation. (2 by mgiuca)
    https://github.com/w3c/manifest/pull/701 [breaking] 
  - #670 Change the default value for start_url (2 by boyofgreen, mgiuca)
    https://github.com/w3c/manifest/pull/670 [breaking] 
  - #698 Add ctor params to BeforeInstallPromptEvent (1 by mgiuca)
    https://github.com/w3c/manifest/pull/698 
  - #700 Editorial: Attempt to fix the navigation scope monkey patching. (1 by mgiuca)
    https://github.com/w3c/manifest/pull/700 

  2 pull requests merged:
  - Editorial: Moved non-normative text into a note.
    https://github.com/w3c/manifest/pull/702 
  - Add ctor params to BeforeInstallPromptEvent
    https://github.com/w3c/manifest/pull/698 

* w3c/screen-orientation (+1/-1/💬0)
  1 pull requests submitted:
  - Add .pr-preview.json (by xfq)
    https://github.com/w3c/screen-orientation/pull/118 

  1 pull requests merged:
  - Add .pr-preview.json
    https://github.com/w3c/screen-orientation/pull/118 


Repositories tracked by this digest:
-----------------------------------
* 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