Tags to remove from template processing in 6.0:

• all _esc tags, replace with a general string tag processor that handles various encodings

  [layers_esc] => [layers escape="url"]   

• layer/group state management tags, those that manage checkboxes and select lists (no replacement)
• zoom direction state management tags (no replacement)
• zoom size state management tags (no replacement)

• all extent _esc tags (this functionality is already in 5.6)

  [mapext_esc] => [mapext escape="url"]

• all extent part tags (e.g. [minx] or [refminx]) (this functionality is already in 5.6)

  [minx] => [mapext format="$minx"] or
  [refmaxx] => [refext format="$maxx"]

• all item_raw and _esc tags, use [item ...] tag instead, leave the shortcut [itemname] tags in place