Update v0.1a

-Font display problem fixed
-Name input system improved
-Volume adjust is now more flexible
-Minor dialogue changes
-Game difficult tweaked
-Skill cost will now be displayed when learning new skills
-Skip Turn display improved
-Clicking the character portrait can open menu now
-A confirmation window will now appear when the flask potion icon is clicked
-Fix flask potion icon priority
-Adjust treasure chest texture position
-A new game over screen