Fenics-ufl

- NB! Using shapes such as (1,) and (1,1) instead of () for 1D tensor quantities I, x, grad(f)
- Add cell.facet_diameter
- Add new concept Domain
- Add new concept Region, which is the union of numbered subdomains
- Add integration over regions (which may be overlapping by sharing subdomains)
- Add integration over everywhere
- Add functions cosh, sinh, tanh, Max, Min
- Generalize jump(v,n) for rank(v) > 2
- Fix some minor bugs

- Add support for pickling of expressions (thanks to Graham Markall)
- Add shorthand notation A**2 == inner(A, A), special cased for power 2.
- Add support for measure sum notation f*(dx(0) + dx(3)) == f*dx(0) + f*dx(3)
- Supporting code for bugfix in PyDOLFIN when comparing test/trial functions
- Remove support for tuple form notation as this was ambiguous
- Bugfix in quadrature degree estimation, never returning <0 now
- Remove use of cmp to accomodate removal from python 3

1.1-alpha-prerelease (2012-11-18)

(Not released, snapshot archived with submission of UFL journal paper)
- Support adding 0 to forms, allowing sum([a])
- Major memory savings and optimizations.
- Some bugfixes.
- Add perp operator.
- Support nested tuple syntax like MixedElement((U,V),W)
- Allow outer(a, b, c, ...) by recursive application from left.
- Add simplification f/f -> 1
- Add operators <,>,<=,>= in place of lt,gt,le,ge

- No changes since rc1.

- Added tests covering snippets from UFL chapter in FEniCS book
- Added more unit tests
- Added operators diag and diag_vector
- Added geometric quantities cell.surface_area and cell.facet_area
- Fixed rtruediv bug
- Fixed bug with derivatives of elements of type Real with unspecified cell

- Added nabla_grad and nabla_div operators
- Added error function erf(x)
- Added bessel functions of first and second kind, normal and modified,
bessel_J(nu, x), bessel_Y(nu, x), bessel_I(nu, x), bessel_K(nu, x)
- Extended derivative() to allow indexed coefficient(s) as differentiation variable
- Made `*Constant` use the `Real` space instead of `DG0`
- Bugfix in adjoint where test and trial functions were in different spaces
- Bugfix in replace where the argument to a grad was replaced with 0
- Bugfix in reconstruction of tensor elements
- Some other minor bugfixes

- Support c*form where c depends on a coefficient in a Real space