Warning: if you forget to get the guard uniform before going to the Thieves' Passage, you will be permanently stuck inside and you will have to find an older save (or restart the game like me).
I tried the Black Hole at lvl 34 (nothing left to do in the game): not only it resets your ships, equipment and skills, but also your quests, achievements and money: you restart the game with absolutely nothing kept.
Small typo on "Banking" power description (increaed -> increased). And instead of a 10x/100x levels buy button, a 25x levels buy button would be a more elegant addition to the game, considering the multiplier caps.
Nice, but I'm not happy with controls: It's missing a right click for mouse and also an option to remove the 'sticky' behavior that triggers every time you hold space bar for 2 squares in a row.
I've put something about that in my issue tracker - thanks!