*Add a "parent" attribute to <tasklet/>. This will allow tasklets to inherit properties from other tasklets that have been configured.
*A "merge" attribute for will have to be added to the following elements that occur with in <tasklet/>:
<skippable-exception-classes/>
<fatal-exception-classes/>
<retryable-exception-classes/>
<streams/>
<retry-listeners/>
*<tasklet/> should become a top-level element with an "abstract" attribute.
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