Double click on autocomplete causes page freeze

[warpech]

As pointed in #1009, double click on autocomplete cell causes page freeze in 0.9.16:

Steps to reproduce:

Go to http://handsontable.com/demo/autocomplete.html

In the Autocomplete lazy mode example,
click on a cell in the car column, then click on a cell in the color column, then
click a cell in the car column, you should start noticing that the cells are randomly
changing values by now, keep clicking in different cells within the grid .... the
browser will slow to a crawl and force you to close

[cwue]

Perhaps it helps:
there are lots of "afterChange" signals sent when using autocomplete (but not always multiple).
Open a console at http://jsfiddle.net/Ztq3r/ and click on the dropdown colors.

[psmolenski]

Fixed in version 0.9.17. Please, upgrade and confirm.