Update v0.0.5

Small update for the Steam couch co-op fest coming up on Feb 10th.

• Added an upgrade to fireball speed, at common rarity
• Shifted the hitboxes of horse kick to be easier to hit someone at point-blank range
• Fixed a bug where text in pre-battle in the local campaign is too long, making the 'next' button unable to be clicked.
• Made all card rarities progressively rarer
• Players in the local campaign can now individually make choices for events, where previously one event applied to all players
• Removed unnecessary print statements
• Added a section in the tutorial describing how to add multiple inputs to skills