[Commander] Added cost modification (commander cost 2 more each time it's cast)
[Commander] return Commander to command zone when it's exiled or put in graveyard
* Fixed that attacking creature with deathtouch and trample had to assign more than 1 damage to blocker if only blocked by one  (fixes #290).
* Fixed a bug that ActivatedOncePerTurnActivatedAbility could only be used once per game instead of once per permanent and turn (concerns Putrid Leech, Patron of the Orochi, Akki Avalanchers, Brutal Deceiver, Callous Deceiver, Cruel Deceiver, Feral Deceiver, Harsh Deceiver, Viashino Slaughtermaster, Krallenhorde Killer, Wolfbitten Captive, Beetleform Mage. Twinblade Slasher, Frilled Oculus, Ghor-Clan Bloodscale, Darkthicket Wolf, Skinshifter
Steel Hellkite, Wirewood Symbiote, Knight of the Skyward Eye, Rootwalla, Basking Rootwalla, Quirion Ranger).
* Fixed a bug that looked at cards were sometimes not shown (fixes #266 and fixes #264). Removed unused code.
linux fixes (dox2unix) and basic lands added from LEA to 3ED
* Test of Faith, Candles Glow - Fixed that damage event was replaced and so only one prevent effect was applied.
* Frostwielder, Kumano, Master Yambushi, Kumanos Pupils - Fixed that the exile effect did only work during the turn the creature came into play.
Merge branch 'master' of https://github.com/magefree/mage