ran wmlindent
ran wesnoth-optipng on the thunderer line
  Original size: 1589 KiB on 354 files
 Optimized size: 336 KiB
   Total saving: 1252 KiB = 78% decrease
ran wesnoth-optipng on the new spearman sprites
  Original size: 28 KiB on 16 files
 Optimized size: 12 KiB
   Total saving: 15 KiB = 55% decrease