enginEcon 0.0.1

helper functions for Engineering Economy problems

This module provides
Interest table calculators in form of

[A/P,i%,n] --> AP(i,n)  

CashFlow Object that helps with adding and calculation of worth

TODO

1) Test cases to verify everything is correct    
2) adding more calculation to CashFlow object
    2a. B/C calculations
    2b. MIRR calculations
    2c. IRR calculation
    2d. incremental comparisons