Demo update to v0.67

This update includes bug fixes and a few visual changes based on your feedback. The main focus was replacing the text feedback with graphics and visual effects.

*old hexagons are now replaced by crystals *enemies/crystals destroyed no longer show the value gained in text form *damage dealt text size is reduced *when player gets hit he drops some of the crystals on the ground *additional sound effects added for crystals destroyed/collected *crystal collection time is greatly reduced making it easier to collect even in mid-air *crystals get destroyed with one hit *Some UI information panels re-positioned to make the read easier during gameplay

Thank you again , to all of you that sent the feedback and hope the changes will make the game experience better.