Fix Phobos dependencies on autodecoding

[nkm1]

On Thursday, 15 August 2019 at 11:02:54 UTC, Argolis wrote:

> My (refined) point still stands: can you provide example of 
> (text processing) algorithms and use cases that don't need 
> grapheme segmentation?

Parsing XML, HTML and other such things is what people usually 
have in mind. In general, all sorts of text where human-readable 
parts are interleaved with (easier to handle) machine 
instructions.