-made last skip impossible

- changed some textures for visual clarity / contrast between jumping blocks and the floor
- added clipping to bridge where rope is to prevent getting stuck between rope and upright beam (thanks Smi)
- changed sky and slightly changed lighting to reflect that. (thanks Makis for feedback)

- slight brightness increase
- planted some shrubs
- fixed a z-fight

- rebuilt it from the ground up
- fixed many texture issues
- fixed some lighting problems
- applied the laws of gravity to the broken boards at the start of the bridge (the other side has broken boards but they are firmly still screwed in)
- the rock that took out the bridge is now at the bottom
- snow spread out on mountains more naturally
- for some reason shrubs grew on the mountain
- probably more but I forget...

fix skybox issue?

- renovated cave system
- it snowed
- fixed cubemaps
- 3d skybox
- general fixes to geometry

Hoping my textures pack this time

reupload for textures

Created kz_natureblock.