Passing value through when selecting via `toCell`

When using the `toCell` parameter, it's not properly passing the
`value` argument through to the cell selections, so deselection
doesn't reliably work. This simple change looks to fix that.
Merge branch 'cellsection-tocell' of git://github.com/brianarn/dgrid into deselect-range
Also fix range deselection in Selection
Document Selection/CellSelection range-deselect fixes in CHANGES.md