News for GrAL 0.2

• does now work also with gcc 3
• new GrAL modules:
  • complex3d
  • cartesian2d
  • cartesian3d
  • triang2d
  • testing
  • gmv-io
  • geomview-io
• tutorial on adapting a data structure to the GrAL interface was extended
• many additions to gral/base :
  • some tests added (still not enough)
  • isomorphism calculation on grids
  • classes for grid morphisms
  • union view of disjoint grids
  • generic edge and facet support for 3D grids
  • flags and switch operators added consistently
  • new tags for element_traits and grid_traits
• archetype feature for 3D grids: This allows treating the boundary of 3D cells as a 2D grid, and in combination with the isomorphism determination algorithm allows truely generic handling of 3D grids.
• gral/distributed : support for persistent storage of distributed grids in files test directories added, and bugs fixed
• additions to geometry module:
  • intersections of geometric entities,
  • small matrix primitives (norms, condition numbers, small linear systems)