return constraint multipliers when nlp is solved
Temporarily disable return of lambda
correct comment style
Add n and m fields to problem struct
Use new field of problem to allocate and return constraint multiplier array
Calculate and display constraint multipliers in example file
customize the setup.py
add more exception handling within the C extension
add an example that finds the minimum of the unconstrained bivariate rosenberg function starting from a tricky point and using the hessian
reorganize the packaging and add utility functions for unconstrained optimization
play around with ipopt tolerance options
reorganize the code some more
Merge branch 'multipliers' of https://github.com/ebogart/pyipopt into my_pyipopt
fix an incref bug related to callbacks and add an example that uses the unconstrained minimization interface
remove callback incref bug workaround code and comments now that the bug has been fixed
add a couple more unconstrained minimization examples
Merge pull request #11 from argriffing/my_pyipopt

Merge bug fixes and other changes from argriffing.