Patch v0.2.1

This patch has such a large impact on the game that almost every card went through a rebalancing or total redesign. Several cards were removed and a lot were added. The game counts 7 more cards than the previous version. We don't consider this operation as a balancing thus there's no detail on the changes.

New combat system

 * Global strikeback: when a creature is attacked, it strikes back for an amount of damage equal to its power.
 * Protection only works when a creature is attacked. Protection doesn't count regarding strike back damages.
 * Haunt only works upon attack.
 * Ranged attack creatures do not receive strike back damage when not adjacent to the attacked creature.
 * Ranged attack creatures do not strike back.
 * New ability - Faerialink: When this creature attacks, you gain as much faeria as damage done.
 * New ability - Rage X: If you damaged the opponent's orb this turn, this creature gains X power and X life when it comes into play.

Land occupation rule
The game now behaves differently regarding land occupation:
 * The occupier is no longer destroyed upon land destruction.
 * An aquatic creature is no longer destroyed when the lake it occupied is turn into another land type.
 * When your turn ends, all your creatures over water without aquatic or flying are destroyed.
 * When your turn ends, all your aquatic creatures over non-lake lands are destroyed.

Rarities and Legendary rule
The rarities were modified:
 * Basic (B): is reserved to all the cards you can get from the starters
 * Common (C)
 * Exceptional (E)
 * Rare (R)
 * Legendary (L): legendary cards are now limited to 1 copy per deck.

The game now counts only 15 legendary cards.

Memorium
The Memorium now contains the 4 starters but only 1 booster, its price is 100 memoria. The content of the booster depends on your level:
 * Level 1 to 9: 7 commons
 * Level 10 to 14: 6 commons + 1 exceptional
 * Level 15 to 19: 5 commons + 1 exceptional + 1 rare
 * Level 20+: 5 commons + 1 exceptional + 1 rare. One time over 15, the rare is replaced with a legendary.

Amount of xp/memoria earned

 * A victory rewards 65 memoria on average, regardless of your level. The exact amount depends on the game duration and level difference.
 * A loss rewards 35 memoria on average, regardless of your level. The exact amount depends on the game duration and level difference.
 * Victories in classic earn the same amount of XP but the XP required to reach level 30 has been increased by 50%.
 * Private games rewards 33% of XP and memoria.

Bug fixes

 * Fixed a bug that preveted to unlock achievements in a classic game.
 * The sort on rarities now works properly.
 * Cards like Aquaria or Gravity Shift no longer ask for targets all at once but after each effect is resolved.