insert_final_newline = unset doesn't obey existing setting

[jsit]

I have insert_final_newline = unset in my .editorconfig, and set nofixendofline in my .vimrc.

When editorconfig runs, it turns fixendofline/fixeol on again, because insert_final_newline isn't set to false:

    if s:IsRuleActive('insert_final_newline', a:config)
        if exists('+fixendofline')
            if a:config["insert_final_newline"] == "false"
                setl nofixendofline
            else
                setl fixendofline
            endif
        elseif  exists(':SetNoEOL') == 2
            if a:config["insert_final_newline"] == "false"
                silent! SetNoEOL    " Use the PreserveNoEOL plugin to accomplish it
            endif
        endif
    endif

It may make more sense if unset just used the existing (no)fixeol setting.

The reason I'm using unset at all is because I have true in my home folder's .editorconfig, but want to unset it for a project in a subdirectory.

[jsit]

Maybe:

if a:config["insert_final_newline"] == "false" || !&fixendofline
    setl nofixendofline

[cxw42]

Related to #136