Implement title alignment

This adds support for `i3 4.16`'s ability to set the title alignment.
The command is `title_align left|center|right`.

When the title is on the right, marks are moved to the left. Otherwise,
they are on the right.

1 files changed, 1 insertions, 0 deletions

diff --git a/sway/commands.c b/sway/commands.c
index d35658d5..bffc18f6 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -103,6 +103,7 @@ static struct cmd_handler handlers[] = {
         { "smart_borders", cmd_smart_borders },
         { "smart_gaps", cmd_smart_gaps },
         { "tiling_drag", cmd_tiling_drag },
+        { "title_align", cmd_title_align },
         { "titlebar_border_thickness", cmd_titlebar_border_thickness },
         { "titlebar_padding", cmd_titlebar_padding },
         { "workspace", cmd_workspace },