POV-Ray 3.1 final release September 1998

Bugs fixed since beta.6

 Fixed media bug in multi-density declared media
 Fixed included macro crash
 Added translate, rotate, scale, transform, matrix to material{}
 Added logical function "defined(IDENTIFIER)"
  Note: When #read (MyFile,Var) hits eof, MyFile is closed and 
        it does #undef MyFile automatically.  Its always worked
        this way.  But now you can do...
         #while(defined(MyFile))
           #read(MyFile,Var)
         #end
 Fixed #undef MyMaterial

Bugs fixed since beta.5

 Made density{color COLOR} legal mostly for use in density_map
 Made pignent{average color_map{}} illegal
 Fixed old bezier type 0 bug
 Eliminated negative strength blobs from bounding slab calculation
 Fixed hfield divide by zero bug on some platforms which didn't trap
 Added some missing identifier types as macro parameters
 Fixed mosaic preview overflow on odd size images
 Implemented material{} statement.
   MATERIAL:
     material{[MATERIAL_IDENTIFIER][MATERIAL_ITEMS...]}
   MATERIAL_ITEMS:
     TEXTURE  |  INTERIOR
  Example
   #declare MyGlass=material{texture{Glass_T} interior{Glass_I}}
   object{MyObject material{MyGlass}}
 Fixed problem with media and no light sources.
 Fixed memory leak in mesh
 Fixed erronious missing pigment in fully textured mesh
 Fixed repeat warp flip bug from 3.02
 Fixed multi-dimension array initializer bug
 Fixed multi-density in declared media bug

POV-Ray 3.1.beta.5 released late July 1998

Bugs fixed since beta.4

 The +Q8 and +Q9 now correctly turn media off/on
 Inverse CSG intersections now use merge rather than union.
 Mesh triangle textures now translate properly.
 The density_file pattern now searches +Lpath & Library_Path=path
 Negative subscript on array now properly trapped
 Fixed bug with macros with no parameters
 Fixed bug redeclaring as wrong type caused crash.
 Fixed bug density with no color_map inside density_map crashed.
 Fixed bug #declare MyArray=YourArray now works.
 New feature #declare MyIdentifier=YourIdentifier now works.

POV-Ray 3.1.beta.4 first public beta July 4th.
