fix(windows): round row/col to 2 decimals

Setting cmdheight to 0 and then entering a command would change the
cmdheight to 1 temporarily. This small change meant that the bounce back
was extremely slow and so never reached back to originial position.
Rounding fixes this

See #124

lua/notify/windows/init.lua

@@ -261,23 +261,22 @@ function WindowAnimator:apply_updates()
       self:remove_win(win)
     else
       local win_updated = false
-      local function set_field(field, round_field)
+      local function set_field(field, min, round_to)
         if not states[field] then
           return
         end
-        local new_value = round_field and max(round(states[field].position), 1)
-          or states[field].position
+        local new_value = max(round(states[field].position, round_to), min)
         if new_value == conf[field] then
           return
         end
         win_updated = true
         conf[field] = new_value
       end
 
-      set_field("row", false)
-      set_field("col", false)
-      set_field("width", true)
-      set_field("height", true)
+      set_field("row", 0, 2)
+      set_field("col", 0, 2)
+      set_field("width", 1)
+      set_field("height", 1)
 
       if win_updated then
         api.nvim_win_set_config(win, conf)