Riverguard update

A new opening scene and a new starting zone when you begin your adventure in Riverguard.
All the levels now have a darker tone and spells shine in the darkness.
A new look for Eria and Argos spells.
A better aim-system for gamepad using aim-bow as default.
One more Bad Fate, for a total of Ten !
Two more books !
Breakable objects and Burden Bats !
Some nicer pixel here and there.
So, ready your WASD or grab your aim-bow.. and prepare to run The Riverguard Update !

Denis