Changed:

[IMPORTANT INCOMPATIBILITY] IupParamf renamed to IupParam and IupParamBox changed its signature. They are now actual controls and cab be also used in LED and Lua as such. In Lua the constructors iup.param{} and iup.parambox{} must be used instead of the previous functions. After creating the IupParamBox, IupAppend or IupInsert must be called to insert the box in the parent child list. There are NO changes for IupGetParam, it is fully backward compatible.