gi-gobject-2.0.16: ChangeLog.md

### 2.0.16

+ Remove enable-overloading flags, and use instead explicit CPP checks for 'haskell-gi-overloading-1.0', see [how to disable overloading](https://github.com/haskell-gi/haskell-gi/wiki/Overloading\#disabling-overloading).

### 2.0.15

+ Generate bindings for [Object.setDataFull](https://hackage.haskell.org/package/gi-gobject/docs/GI-GObject-Objects-Object.html#v:objectSetDataFull).