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New in 2.0, 2013-04-09
* [MAJOR ABI BREAKING CHANGE] Switch from uBlas to Eigen for matrix computation.
* Add support for Eigen sparse matrices.
* Huge speed-up by avoiding allocationg in time-critical functions/methods.
* Various bugfix.

New in 1.0, 2012-01-30
* Specialize template problem for empty vector of constraints.
* Support for cache functions.
* Switch to cmake.
* Add support for nonlinear least-square problems.

New in 0.4, 2009-11-16:
* Make plug-in loading more robust.
* Enhanced gradient checks.
* Handle symbol visibility under Linux properly.
* Uniformized floating point number display.
* Bug fix

New in 0.3, 2009-09-25:
* Finite difference gradients
* New kinds of functions: constant, identity function.
* Enhance display of problem, solver, functions.
* Experimental support for parametrized functions.
* Numerous bug fixes.

New in 0.2, 2009-05-03:
* New plug-in system
* Can export functions to Gnuplot.
* New N times derivable function.

New in 0.1, 04/17/2009:
* Shared interface definition.
* Implementation of the CFSQP bridge.
* Implementation of the Ipopt bridge.
