luaify vim init, add mouse scroll binds

.config/nvim/init.lua

@@ -18,7 +18,7 @@ vim.opt.completeopt = noinsert,menuone,noselect
 vim.opt.cursorline = true
 
 -- don't require writing files when changing buffers
-vim.cmd("set hidden")
+vim.opt.hidden = true
 
 -- show find/replace preview in split window
 vim.opt.inccommand = split
@@ -29,6 +29,9 @@ vim.opt.mouse = a
 -- set title of window to filename
 vim.opt.title = true
 
+-- make line breaks on words instead of characters
+vim.opt.linebreak = true
+
 -- replace tabs with spaces
 vim.opt.expandtab = true
 
@@ -229,3 +232,7 @@ vim.keymap.set('i', '<C-BS>', '<C-W>')
 
 -- map ctrl-delete to delete next word
 vim.keymap.set('i', '<C-Del>', '<C-o>dw')
+
+-- mouse scrolling
+vim.keymap.set('n', '<ScrollWheelUp>', '<C-u>')
+vim.keymap.set('n', '<ScrollWheelDown>', '<C-d>')