Adding HISTORY.md entries for 3.10.0
Replacing @SINCE@ with currect version
Update HISTORY.md

Adding entry for https://github.com/yui/yui3/commit/778c72b1943f425cc3a6238db56192aeec95a296
added entry for "revert EventTarget back..."
Merge pull request #621 from triptych/since3100

Replacing @SINCE@ with currect version
Build base with proper `@since` version tags
added entry for node-deprecated removal
added entry for dom-deprecated removal
Updated contrib package that works on node 8 and 10
Updated contrib package that works on node 8 and 10
add entry for italian language files update.
updated entry based on DD checkin.
update entry based on Handlebars checkin.
Minimal flux fix for CandleStickSeries regression from Attribute perf changes.

BACKGROUND

Prior to the Attribute perf changes, we used `state.addAll()` to set up
the initial config for an attribute while adding it. For performance
reasons this was replaced by simply setting `state.data` directly, to
consciously avoid iteration and mix costs for the initial add.

However there are use cases, such as CandleStickSeries' relationship
between it's `graphic` and `upcandle` attributes where this causes
a regression.

`graphic` is defined by a superclass, but it's setter is overridden by
CandleStickSeries. The overridden setter sets the `upcandle` attribute,
which only exists on CandleStickSeries, not on the superclass.

As a result, the value of `upcandle` is set while the `graphic` setter
is executed, before the `upcandle` attribute is formally added.

In older versions, we'd add the `upcandle` attribute later, when
processing CandleStickSeries attributes, and since we just merged,
we'd maintain the original set value. In the new version, since we
set `state.data` directly, the original value gets blown away.

FIX

The localized fix, aims to re-introduce the 'merge' behavior, if
a value already exists, while still trying to keep the optimized
performance.

The longer term fix, which is targetted for the next release is
to remove the class-by-class attribute setup and just added all
attributes in one shot, there by avoiding the issue.

TESTING

All library tests pass through yogi --no-cli. A unit test was added
to attribute for this use case.

Total]: Passed: 10843 Failed: 0 Total: 10936 (ignored 93)
Fixed Gallery API in Loader script
Loader and Seed build for gallery
Loader and Seed build for gallery after merge
Updated some grunt configs for release processing
Updated some grunt configs for release processing
Merge branch 'attrs-subclass-setter-override-fix' into dev-3.x