I've spoken briefly with the author Jax about adding Unicode support to Ini++ and a long story short: Jax himself is busy but he doesn't mind sharing the source-code to someone else who is willing to look at it.
The challenge and the problem is that Ini++ is an extension that has been in development for more or less a decade, thus the code is a bit messy and adding Unicode support is not something that is easily done. I'm no coder myself so I can't judge the difficulty of the task at hand.
If there are any extension coders here, interested to take a look at this: you can either reply here or PM me directly and we can discuss further!
Update: I forgot to mention that this is a paid request. How much exactly we'll agree upon after doing an estimation of the code and the time it'd take. I need to know if anyone is interested first however.