0.21 Log

These are some changes we decided were pretty important to get out quickly. We have a lot of other changes planned but they're going to be implemented in 0.3

• Made explosive barrels glow
• Fixed spawning so that enemies don't spawn inside objects 
• Fixed rounds system so it actually works
• Added text for rounds
• Made enemies more easy to spot
• Made lava appear in game
• Nerfed lava (previously killed enemies)