remove dijit.js and dijit-all.js rollups, refs #1
remove deprecated layout modules (AccordionPane, LinkPane, SplitContainer), refs #1
remove deprecated _Calendar module, refs #1
remove dijit/WidgetSet deprecated module, refs #1
remove deprecated _BidiSupport module, refs #1
remove deprecated _Templated module, refs #1
_TemplatedMixin: remove support for templatePath etc., refs #4
_WidgetsInTemplateMixin: remove support for _earlyTemplatedStartup etc., refs #4
remove deprecated dijit/robotx module, should use dojo/robotx instead, refs #1
remove dijit/_base except for dijit/_base/manager::defaultDuration def, refs #1
Tree: remove support for dojo/data, direct store argument, etc., refs #4
remove dijit-legacy-requires, refs #4
[temporarily] stop loading _testCommon.js; it's based on dojo/ready and not easy to change
start removing _Widget, refs #1

Many of the modules converted to use _WidgetBase instead of _Widgetneed to be changed to include 	_OnDijitClickMixin, _FocusMixin, dojo/uacss, and dojo/hccss.
use dojo/Deferred not dojo/_base/Deferred, refs #4
_WidgetBase: remove attributeMap
_WidgetBase: remove _connects, _supportingWidgets
part of removing dijit/_base
dijit/focus cleanup, refs #4
_WidgetBase: remove dojo/_base/connect and dojo/topic dependency