test: fixes +to-wain (no more trailing empty lines)
:: empty string works fine
::
%+ expect-eq
- !> ~['']
+ !> ~
!> (to-wain '')
:: leading/trailing/consecutive newlines all work fine
::
%+ expect-eq
- !> ~['' 'hi' '' '' 'there' '']
+ !> ~['' 'hi' '' '' 'there']
!> (to-wain '\0ahi\0a\0a\0athere\0a')
==
:: join a list of lines (cords) into a single cord
