New Features:
-    new hero: Claude Chappe
-    Clearer design for buying and selling chips
-    Chips now choose their target intelligently (with more than one attacker in range)
-    Added an easter egg

Bugfixes:
-    No new "endless" stages were available in the level selector beyond level 28.
-    Heat generation and damage corrected and adjusted
-    Fixed yet another bug when resuming the game

Miscellaneous:
-    Changes in "endless" stage generation. Difficulty of the stage layout increases with the level. Impossible configurations are avoided.
-    Changed the order of some levels in "normal" mode to make the difficulty progress more consistently.
