[manifest] grouping, precision (#414)

including fixing the bugs I added
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/manifest/pull/414

-- Commit Summary --

  * grouping, precision

-- File Changes --

    M images/manifest-src-directive.svg (6)

-- Patch Links --

https://github.com/w3c/manifest/pull/414.patch
https://github.com/w3c/manifest/pull/414.diff

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Reply to this email directly or view it on GitHub:
https://github.com/w3c/manifest/pull/414