Missing features & functionalities

54 - (NEW) Arrow keys to move up & down the hero list in the Hero window.

55 - Lookout Tower functionality. Not urgent, but it was reported as bug 0.71#57 - which is not the case - so I thought I’d better report this in the right place.
[IMPLEMENTED]

56 - Battle Retreat. Currently we can retreat, but hero disappears completely. It should reappear at Tavern with 1 L1 unit and no but same artifacts (and of course spells).
[Partly implemented - see [url=http://bugs.vcmi.eu/view.php?id=1416]#1416]

57 - Battle Surrender. Same as retreat, but paying the fee to keep your troops (it’ll appear at Tavern with same troops, artifacts & spells)
[Partly implemented - see [url=http://bugs.vcmi.eu/view.php?id=1416]#1416]

EDIT: When implementing 56 & 57, make sure Retreat/Surrender function also if the hero has no Tavern, but builds one before the end of the week or finds one on the map.