be less specific about feature set of each crate in top-level docs
//!
//! Then you get extra bits of functionality from the others:
//! - **image**: conversion of 2D lattice maps to/from images
-//! - **mesh**: 3D isosurface generation algorithms, smooth and cubic
-//! - **procgen**: procedural generation of lattice maps, including sampled SDFs and height maps
+//! - **mesh**: 3D mesh generation algorithms
+//! - **procgen**: procedural generation of lattice maps
//! - **search**: search algorithms on lattice maps
//! - **vox**: conversion of 3D lattice maps to/from VOX data format
//!
