v0.7.0

Today I returned to full-time development through the weekend. I made some progress on world generation, sound design, and movement mechanics with this build.

• combining biomes into a unified world generator (disabled until bugs fixed)
• implementing footstep sounds while in bipedal form
• adding an engine whine sound when the exosuit is performing work
• improving physics related to climbing slopes and bouncing around
• various tweaks and fixes

Tomorrow I plan to continue this direction with more vehicle sounds and bug fixes. My hope is to resolve issues with world generation and movement so I can advance other aspects, including material spawning and outlining the crafting system.