API to change milestones

[Craig]

I need a way to change (add and delete) milestones via a CLI app. (Most 
likely it will be in perl, but that isn't definite.)

I looked at Bugzilla::WebService::Product, but all of the 
routines/methods are marked as not stable.

What is the "best way" to update milestones for a specific product 
programatically?

Adding it directly to the DB works just fine for me, but I wanted to do 
it using whatever method is "approved". (Makes upgrades easier. :> )

Any thoughts would be appreciated.

TIA!
Craig