Full Unit Test Coverage for Public Functions

• All public functions now have full Unit Test coverage except for decapitalized(), which has a broken implementation.
• Renamed truncate() to truncated() and fixed implementation.
• Added tests for all Trimming functions.

See build details and artifacts at buddybuild:
https://dashboard.buddybuild.com/apps/58b67d22d21c470100b0c394/build/58b7caec95315a010041d9d3