batch resource change events
apply grind 4.4
tweak grind error message
Workaround to get chrome.restoreEntry() to work
Small fix-up
Merge pull request #496 from sunglim/grind_44apply

apply grind 4.4
Merge pull request #498 from sunglim/grind_err_msg

tweak grind error message
changed event to be list of changes
fix nit
address comment
Merge pull request #491 from dart-lang/ws

batch resource change events
Updated the fix. Using fix from @justinfagnani instead (https://codereview.chromium.org/105893010).
Merge pull request #501 from dinhviethoa/382-workaround-for-chrome-retain-entry

Workaround to get chrome.restoreEntry() to work
Build version 0.4.23
Build version 0.4.24
Remove key "key" from the version for WebStore
Tiny fix to the previous CL along the same lines
Merge pull request #507 from ussuri/fix-spark_widgets-imports-2

Tiny fix to the previous CL along the same lines
Merge branch 'upstream/master'
Merge branch 'origin/fix-polymer-ui-menu'