Allow users to limit the number of items the change-history macro returns

We would find it useful - especially for pages with hundreds of versions - to be able to limit the number of version returned by the {change-history} macro.

e.g. something along the lines of:

{change-history:limit=X}

Where the parameter X is the number of previous versions we want to display.

Adaptavist used to have the {version-history} macro which provided this functionality, but it seems they are no longer developing that plugin.