GREETINGS FROM iSTANBUL

[Salih Dincer]

Greetings from istanbul...

In our language, the capital letter 'i' is used, similar to the 
lower case.  But in this example:
```d
// D 2.0.83

import std.stdio, std.uni;

void main()
{
   auto message = "Greetings from istanbul"d;

   message.asUpperCase.writeln; // GREETINGS FROM ISTANBUL

   /* D is very talented at this,
    * except for one letter: 'i'
    * ref: https://en.m.wikipedia.org/wiki/Istanbul
    */
}
```
I've to code a custom solution.  Is it possible to solve the 
problem from within std.uni?

We are discussing the issue in our own community.  I also saw: 
https://forum.dlang.org/post/vxnnykllgxsghlludpqv@forum.dlang.org

Thanks...