Read the full release notes .Version 1.6:- Big improvements in decimation algorithm to prevent the creation of gaps in meshes- Added compression boost multiplier for meshes that need extra compressionVersion 1.5e:- Preserve hierarchy when using LODGroupVersion 1.5d:- Code changes for compatibility with Unity 4.6, 5.0, 5.1 and 5.2 Version 1.5c:- Making textures readable triggered an error when using the new standard shaderVersion 1.5b:- Skinned meshes with blendshapes would cause Unity 5 to crashVersion 1.5a:- Bake atlas window would flicker in Unity 5- LODSwitcher tests for the existence of a Camera first- Added optional parameter to create a new gameobject when combining meshesVersion 1.5:- new interface window- remove hidden triangles- remove submeshes- select which submeshes to merge- adjustable nr. of lod levels- detailed control over decimation process- better protection against the creation of holes in heavily decimated meshes- made compatible with unity versions 4.3, 4.4, 4.5, 4.6 and 5.0Version 1.4a:- flat mesh (like a plane) would become distorted- merging too large mesh would skip parts- small algorithm improvements- new save location for meshes- separate backup / revert buttonVersion 1.4.:- massive performance increase(decimating a big mesh of 64K vertices now only takes about 8 seconds)Version 1.3.:- drag & drop material editor for baking atlas- enhanced control panel with more options- improved inspector panel that shows camera distanceVersion 1.2.:- Improved support for skinned meshes- Improved compression algorithm- Auto-split merged meshes that have more than 64K vertices- Supports lightmaps, uv3, uv4 and vertex colors- Supports blend shapes (in 1 mesh, LOD 0 onlyVersion 1.1.:Increased performance by 2.5Better algorithm for reducing trianglesLittle bug fixes in editor windowNegative scale in child transform would cause triangles to flip inside outAll child meshes now need the same lightmap index