Fix #6 - Jumping to a buffer that's open in another window

Had to either remove the jump-to-different-window-if-file-is-open-there
or work around it. Chose to remove that functionality so it'll be more
tag-jump-like. I still consider it a bugfix though.

autoload/dutyl/core.vim

@@ -232,10 +232,7 @@ endfunction
 function! dutyl#core#jumpToPosition(args) abort
     if has_key(a:args,'file')
         let l:bufnr=bufnr(a:args.file)
-        let l:winnr=bufwinnr(l:bufnr)
-        if 0<=l:winnr
-            execute l:winnr.'wincmd w'
-        elseif 0<=l:bufnr
+        if 0<=l:bufnr
             execute 'buffer '.l:bufnr
         else
             execute 'edit '.a:args.file

doc/dutyl.txt

@@ -4,7 +4,7 @@
 Author:  Idan Arye <https://github.com/idanarye/>
 License: Same terms as Vim itself (see |license|)
 
-Version: 1.4.0
+Version: 1.4.1
 
 INTRODUCTION                                                         *dutyl*