Implement combination of endowment+dreaddisease (pays on either death or...

Implement combination of endowment+dreaddisease (pays on either death or disease, contract/premium payments end upton death or disease)

-) The easy implementation would be to use a combined exit probability qx+ix, but that does not allow splitting the risk premium into death and disease risk parts
-) Thus, use cash flows from endowments and dread disease, with px = 1-qx-ix as survivial probability for the contract