DOLFIN 1.2.0

- Fixes bug where child/parent hierarchy in Python were destroyed
- Add utility script dolfin-get-demos
- MeshFunctions in python now support iterable protocol
- Expose ufc::dofmap::tabulate_entity_dofs to GenericDofMap interface
- Expose ufc::dofmap::num_entity_dofs to GenericDofMap interface
- Allow setting of row dof coordinates in preconditioners (only works with PETSc backed for now)
- Expose more PETSc/ML parameters
- Improve speed to tabulating coordinates in some DofMap functions
- Feature: Add support for passing a Constant as default value to a CompiledExpression
- Fix bug in dimension check for 1-D ALE
- Remove some redundant graph code
- Improvements in speed of parallel dual grapj builder
- Fix bug in XMDF output for cell-based Functions
- Fixes for latest version of clang compiler
- LocalSolver class added to efficiently solve cell-wise problems
- New implementation of periodic boundary conditions. Now incorporated into the dofmap
- Optional arguments to assemblers removed
- SymmetricAssembler removed
- Domains for assemblers can now only be attached to forms
- SubMesh can now be constructed without a CellFunction argument, if the MeshDomain contains marked celldomains.
- MeshDomains are propagated to a SubMesh during construction
- Simplify generation of a MeshFunction from MeshDomains: No need to call mesh_function with mesh
- Rename dolfin-config.cmake to DOLFINConfig.cmake
- Use CMake to configure JIT compilation of extension modules
- Feature: Add vertex_to_dof_map to DofMap, which map vertex indices to dolfin dofs
- Feature: Add support for solving on m dimensional meshes embedded in n >= m dimensions