Update features list

Author: Shougo

autoload/vimlint/feature.vim

@@ -20,6 +20,7 @@ function! s:init() abort " {{{
 \ 'browsefilter': 1,
 \ 'builtin_terms': 1,
 \ 'byte_offset': 1,
+\ 'channel': 1,
 \ 'cindent': 1,
 \ 'clientserver': 1,
 \ 'clipboard': 1,
@@ -61,6 +62,7 @@ function! s:init() abort " {{{
 \ 'gui_gnome': 1,
 \ 'gui_gtk': 1,
 \ 'gui_gtk2': 1,
+\ 'gui_gtk3': 1,
 \ 'gui_mac': 1,
 \ 'gui_motif': 1,
 \ 'gui_nextaw': 1,
@@ -73,6 +75,7 @@ function! s:init() abort " {{{
 \ 'hangul_input': 1,
 \ 'iconv': 1,
 \ 'insert_expand': 1,
+\ 'job': 1,
 \ 'jumplist': 1,
 \ 'keymap': 1,
 \ 'langmap': 1,