Option Changes from DCSS 0.5 to DCSS 0.5.1

4-d     Branding

Changed settings:
  New defaults for
  friend_brand = hi:green
  neutral_brand = hi:lightgrey
  stab_brand = hi:blue
  may_stab_brand = hi:yellow
  trap_item_brand = reverse


4-o Tiles Options:
Changed settings:
  'tile_key_repeat' (boolean) is now named 'tile_key_repeat_delay' (number)

Added settings:
  tile_update_rate

Add to tiles_options.txt:
# If Crawl's response rate is too slow, try increasing the update rate.
# tile_update_rate      = 1000
# tile_key_repeat_delay = 200

Many tiles options were lacking explanations in options_guide.txt, that has
been fixed.