Removed hard zone boundaries
Fixed stuff that broke because of hard zone boundary assumption (stardust placement, vertical fog)
Added a skybox!
Removed density-based albedo boost (_TintExponent) to improve perceptual uniformity at different step sizes, reconfigured shader to achieve / surpass previous looks and performance
Cell Brush has a material editor now to enable variant selection
Enabled Caching Shader Preprocessor
Moved raymarching loop into CloudShader
Get environment settings from game manager to enable configuration / variation
Introduced slope-based nebulae damping and volumetric flow
Hid optional volumetric features behind preprocessor branches
Created shader variants selected by global keywords for all shaders depending on volumetrics
Environment settings used to configure shader variant selection
Moved dynamic lighting settings to own subclass
Dynamically adjust gravity map isoline contour depth range according to zone contents
Implemented hostility system - entities can mark each other as friend or foe depending on changing conditions (currently only depends on local security level)
Added "friendly" target indicators in blue
Created menu screen
Created inventory tab with 2 cargo panes and properties panel
Updated the style of every UI prefab
Implemented Blurred UI material
Implemented UI shaders for map layers
Created Map tab (still needs input)
