message: Adding prism related comments to CHANGELOG
diff: Version 3.4.1 (development)
  ===========================
  +- Added support for wedge shaped mesh elements of arbitrary order (with
  + Geometry type PRISM) which have two triangular faces and three
  + quadrilateral faces.
  +
  +- Added H1 and L2 finite elements of arbitrary order for Wedge elements.
  +
  +- Added support for mixed meshes containing triangles and quadrilaterals in
  + 2D or tetrahedra, wedges, and hexahedra in 3D.
  +
  +- Added the capability to produce 3D meshes by extruding 2D meshes.
  +
  +- Added a new meshing miniapp named "toroid" which can produce a variety
  + of torus shaped meshes by twisting a stack of wedges or hexahedra.
  +
  - Added support for reading linear and quadratic 2D quadrilateral and triangular
  Cubit meshes.
  