[osis-core] <verse> and <chapter> in <lg> and <list>

[Todd Tillinghast]

In osisCore.1.1.1.xsd we had milestoneStart and milestoneEnd as children
of <lg> and <list>.

Since we have deprecated those elements AND PRESUMING the reasoning for
them to be there in the first place was so to support verse (and
possibly chapter) milestone pairs, is there a stronger case to insert
<chapter> and <verse> as milestones and containers that contain only <l>
and <item in <lg> and <list> respectively?

OR where <milestoneStart> and <milestoneEnd> as children of <lg> and
<list> a bad idea in the first place?

Todd