Testing

[raharrison]

The library needs a comprehensive set of unit tests for each package to locate and iron out any bugs.

[raharrison]

In process of generating automated unit tests for the unit conversion package by downloading conversion factors and using them in testing.

Only foreseeable problem is that the names given to the units may not match up to those used in this converter. Will first need to do some string manipulation to increase the chances and perhaps manually correct a few thereafter.