Type Traits Unit Tests
Type Traits Unit Tests

Added unit tests for the Safe::Integer<T> specializations of:

- std::is_signed
- std::is_unsigned
- std::make_signed
- std::make_unsigned

As well as the Safe::Integer<T> members:

- Signed
- Unsigned
- SignedType
- UnsignedType

RobertLeahy/Safe,RobertLeahy/Safe