AUI-938 Finds content ancestors of the current toggler to avoid collapsing them
AUI-938 Adds unit test for TogglerDelegate:closeAllOnExpand
AUI-939 Adds destructor methods to Toggler and TogglerDelegate
AUI-939 Adds unit tests for TogglerDelegate destructor
AUI-939 - Move the description of the changes from README.md to HISTORY.md
AUI-939 - Source formatting
Standardize unit test files
AUI-939 Source formatting
Remove missing "aui-" css namespace
AUI-939 Fix test for null items
AUI-939 Avoid O(N) payload for indexOf, replace that with Node.contains that operates trough element.compareDocumentPosition and a binary check, much faster.