Please don't change APIs versions by versions[FEATURE REQUEST]

Iris's APIs become much more simple and easy to use compared with old versions. It's great! However, another problem appears, I found that some APIs can not be compatible versions by versions, some API names are changed ,and some APIs are replaced or removed, or added new ones, or changed with function parameters.
That is a big problem when using Iris in product environment. When upgrading versions, there will be great risk to their product env, because much changes have to be done.
Hope Iris can pay much more time and effort on the API design, func signature and naming them, don't change so frequently. In product env, a long term stable version is very necessary, like as RedHat enterprise version.