add missing array-extras module
refactor get tests to use echoecho urls
remove unused helper functions and assets
get tests with random delays for stress testing
Addressed issue in which the legend did not honor specified series marker style for shape. Fix #706
Fix #743. Addressed issue in which styles don't map correctly to a legend when series are styled using a global style object.
Fix #701 Addressed rounding issue in svg implementation. This bug surfaces in edge cases of the PieChart in the charts module.
Merge dev-master into topic branch.
Use mock Y.Lang.now in Throttle tests
Add Y.ArraySort.naturalCompare().

For performing natural-order comparisons of two strings, two numbers, or a
number and a string.
Fix comment typo.
Fix lint errors in ArraySort tests.
Fix missing types in naturalCompare() API docs.
'foo10' would be sorted before 'foo2', not 'foo1'.
Cleared up merge conflicts in charts HISTORY.
Fixed merge conflicts with charts HISTORY.
Add unit tests for #706 and #743.
Merge branch 'issue701' into sprint7
implement @sdesai feedback from pull #721

- missing commas in single `var` declaration
- `getUniqueEchoecho404` for symmetry
Stop unconditionally setting the z-index on sync

This causes a bug where hidden widgets set the z-index of the mask
to their own z-index. The mask z-index is anyway correctly set
previously in _uiSetHostVisibleModal.