neovim md autocommands, also tmux config tweak

nvim/lua/autocmd.lua

@@ -9,3 +9,6 @@ vim.api.nvim_command([[au FileType sql lua require'cmp'.setup.buffer {
     { name = 'buffer' },
   }}
 ]])
+
+-- word break and spelling in markdown files
+vim.api.nvim_command('au BufRead,BufNewFile *.md set spell lbr')

tmux/tmux.conf

@@ -1,6 +1,7 @@
 set-option -g history-limit 100000
 set-option -g status off
 set-option -g focus-events on
+set-option -g detach-on-destroy off
 
 set -ga terminal-overrides ",*256col*:Tc"
 set -g mouse on