Replace UTF8 chars in tmux status line

Reason: powerline/powerline#1652

tmux/.tmux.conf

@@ -66,7 +66,7 @@ set -g pane-active-border-fg colour39
 set -g message-fg colour16
 set -g message-bg colour221
 set -g message-attr bold
-set -g status-left '#[fg=colour16,bg=colour254,bold] #S #[fg=colour254,bg=colour234,nobold]'
+set -g status-left '#[fg=colour16,bg=colour254,bold] #H #[fg=colour224,bg=colour234,nobold] #S #[fg=colour254,bg=colour234,nobold]'
 set -g status-right '#{?window_zoomed_flag, ⨁ ,}#[fg=#cccccc]%b %d #[bold]%R #[bg=#444444,nobold] ☠#{battery_percentage} '
 set -g window-status-format "#[fg=white,bg=colour234] #I #W "
 set -g window-status-current-format "#[fg=colour234,bg=colour39] #[fg=colour16,bg=colour39,noreverse,bold] #I #W #[fg=colour39,bg=colour234,nobold]"