Give metadata about events to widgets.

[mum4k]

Widgets now receive an additional argument together with keyboard and mouse events that provides metadata about the event. Initially it indicates if the widget's container was focused at the time of the event.

[coveralls]

Pull Request Test Coverage Report for Build 1944

• 53 of 59 (89.83%) changed or added relevant lines in 12 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.001%) to 91.004%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
widgets/barchart/barchart.go	0	2	0.0%
widgets/heatmap/heatmap.go	0	2	0.0%
widgets/sparkline/sparkline.go	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
private/fakewidget/fakewidget.go	1	86.05%

Totals
Change from base Build 1941:	-0.001%
Covered Lines:	8083
Relevant Lines:	8882

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💛 - Coveralls

[mum4k]

After further consideration, this isn't really necessary. The use case I had in mind can be achieved without this metadata and I don't know of another. The lack of use case doesn't justify the breaking API change which should be avoided until really necessary.