Business functions for life insurance contract and product management
Based on
* [Bitemporal Persistence](https://github.com/Actuarial-Sciences-for-Africa-ASA/BitemporalPostgres.jl)
* [Product agnostic Bitemporal Life Insurance Data Model](https://github.com/Actuarial-Sciences-for-Africa-ASA/LifeInsuranceDataModel.jl)
* [Pluggable life insurance product definitions](https://github.com/Actuarial-Sciences-for-Africa-ASA/LifeInsuranceProduct.jl) based on [LifeContingencies.jl](https://github.com/JuliaActuary/LifeContingencies.jl)