Missing whitespace in choice text

[willvale]

Whitespace gets elided when a choice runs on into story text. For example:

+ Look[ around]ing around the saloon, you don't find much.->DONE

gives the incorrect choice

Lookaround

and the correct output line

Looking around the saloon, you don't find much.

I did debug this a bit, from memory the leading space of ^ around is removed by clean_string in basic_stream::get_alloc.

[JBenda]

fixed with #132