Clearing older versions

Is there a way to clear older versions of Appian objects? I believe it has an performance impact on the system as the versions of an object keeps growing larger. I would like to only keep the last 5 to 10 versions at most and delete all others from the system. I would really appreciate if any body could point me to a plugin or a method to do this. Since, we have 10 of thousands of objects, manual cleaning is not possible.

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