Adds `Result` class for standardization of function return values. Validates a bit.
Adds `Result` class for standardization of function return values. Validates a bit.

Merge pull request #15 from knod/helpers
scapp281/cliff-effects,shp54/cliff-effects,codeforboston/cliff-effects,codeforboston/cliff-effects,knod/cliff-effects-1,knod/cliff-effects-1,shp54/cliff-effects,scapp281/cliff-effects