[webcomponents] Added proposed changes to the cascade order for Shadow DOM. (#292)

Add proposal from www-style on request from kochi.
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/webcomponents/pull/292

-- Commit Summary --

  * Added proposed changes to the cascade order for Shadow DOM.

-- File Changes --

    A proposals/Shadow-DOM-Cascade-Order.md (130)

-- Patch Links --

https://github.com/w3c/webcomponents/pull/292.patch
https://github.com/w3c/webcomponents/pull/292.diff

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Reply to this email directly or view it on GitHub:
https://github.com/w3c/webcomponents/pull/292