nvim: added barbar to take care of buffer management

.config/nvim/lua/plugins/barbar.lua

@@ -0,0 +1,13 @@
+return { 'romgrk/barbar.nvim',
+    dependencies = {
+        'lewis6991/gitsigns.nvim',   -- OPTIONAL: for git status
+        'nvim-tree/nvim-web-devicons', -- OPTIONAL: for file icons
+    },
+    init = function() vim.g.barbar_auto_setup = false end,
+    opts = {
+        -- lazy.nvim will automatically call setup for you. put your options here, anything missing will use the default:
+        -- animation = true,
+        -- insert_at_start = true,
+        -- …etc.
+    },
+}

.config/nvim/lua/sets.lua

@@ -28,9 +28,6 @@ vim.opt.updatetime = 50
 vim.opt.hlsearch = false
 vim.opt.incsearch = true
 
--- auto-close unused buffers if all changes have been saved
-vim.opt.hidden = false
-
 -- stuff
 
 vim.opt.fillchars:append({ eob = ' ' })