improve riskmodel #73
Description
riskmodel.py is messy, has boiler plate code, and is difficult to read. Should be redone in a clearer way. Such that it does two things:
- give estimates about whether the company may fail in a catastrophe with the current capital and portfolio
- give estimates of the contribution of any one underwritten contract and any one offered but not yet underwritten contract to this
This includes the balancedness of the portfolio.