enthought/pyql — pull request #11 by dpinte (2012-11-05 10:01:38+00:00)
Title: Refactored some of the instruments classes

* Introduced an Instrument base class for instruments (mapping the C++ one) - reduced code duplication
* Exposed the DividendVanillaOption, AnalyticDividendEuropeanEngine, FDAmericanEngine and FDDividendAmericanEngine
* Updates the option_valuation example