I/O related question, and ini parsing

[Mineko]

So, it's my first time implementing something like logging and 
ini parsing/creating, and it appears to work perfectly, but I'm 
not neccessarily a master of D yet..

So, I wanted some advice from my seniors if there's anything I 
should improve on such, I might be missing out on some D-only 
features, so I'd appreciate it.

The important stuff is in /src/breaker/utility: 
https://github.com/ICGCC/Breaker-3D-Game-Engine

I'm a bit curious if my shader loading model is appropriate too, 
that's in /src/breaker/utility/render.d, but you don't have to 
worry about that if you're not interested.

Anyways, thank you for you time and advice!