Separate temperature definition.
Separate area definition.
Separate distance definition.
Removing unused function.
Separate mass definition.
Separate pressure definition.
Separate speed definition.
Separate time definition.
Separate volume definition.
Clean up unused definition objects.
Add augment method to index + tests.
Update/optimize api objects.
Add augment throw test to api-test.
Merge pull request #2 from GCheung55/improvement/refactor-definitions

Improvement/refactor definitions