comment out omp pragmas (they do not seem to help)
enable omp in lattice again
Merge branch 'vendor' into openmp_review
Calculate binomial delta/gamma using Hull formulas
Initializes greeks to null values and cheks vanilla values in fwd evaluation.

Greeks and MoreGreeks aren't initialized on construction, leading to errors when using quanto and forward engines.
Besides, forward engine doesn't check greeks results, returning bogus values when the vanilla engine can't calculate some greeks.
added test for catching missing initialization
Quantlib CDS example translated to python
SWIG: adds missing parameter to upfrontcdshelper
SIWG: adds CDS to DateGeneration rule and IntegralCdsEngine to pricing engines
Update link to screencasts.
Remove empty constructors.

We can safely rely on the default-generated ones.
Merge pull request #139.
Merge pull request #130.
Remove unused variable.
Merge pull request #136.
Added a few more historical closings for NYSE.

Thanks to silvaac.
This closes #133.
Add copyright attribution.
Clean up tabs, variable names etc.
Merge pull request #141.
Merge remote-tracking branch 'lballabio/master'