Allow to specify additional chars for lists

autoload/vimwiki/html.vim

@@ -1455,7 +1455,11 @@ function! s:convert_file(path_html, wikifile) "{{{
     endif
 
     " prepare regexps for lists
-    let s:bullets = '[*-]'
+    if exists("g:vimwiki_additional_bullet_types")
+      let s:bullets = '[*-'. join(keys(g:vimwiki_additional_bullet_types), '') . ']'
+    else
+      let s:bullets = '[*-]'
+    endif
     let s:numbers =
       \'\C\%(#\|\d\+)\|\d\+\.\|[ivxlcdm]\+)\|[IVXLCDM]\+)\|\l\{1,2})\|\u\{1,2})\)'