Update v0.0.6

It's been a while since the last update due to some tasks I had to do, but I still plan on adding more skills and attacks!

• Fixed a bug where you can't buy a 4th skill
• Fixed a bug where you could cancel grab attacks before they finish, making your opponent float helplessly in front of you
  
• (Hopefully) fixed a bug where pressing "i" crashes the game - let me know if you see this pop up
  
• Tweaked the instructions for better readability
• Added an option to the options menu to hide shop instructions
• You can now flip attack/skill cards to see more details on the attack/skill, as a spider chart
• From the shop, you can open an additional menu to directly create health and cancel cards for an additional cost
• Lowered the price of the cancel card to 50 EXP
• The CPU characters in the main menu screen now have new skills and upgrades, rather than the default attacks
• Gaining EXP from attacking an already-hit opponent will now give you 50% of the EXP you would normally get
• Added the "Shop Item +" upgrade which gives you more cards per shop round
• Added the new light attack "Elbow" with higher range and a follow-up "Spinning Elbow" which combos at the wall and provides more damage/EXP
• Added the new skill "Dive Kick", useful for quickly dodging attacks or as a combo ender to cancel into