0.19.0

• Fixed issue with scaler functions when optional parameters were not passed.
• Resolved issue with calculating mathematical expressions when in line with string concatenation.
• Added new "single" schema that is intended to mimic the Oracle "dual" function.
• Reimplemented insert of "ragged key/value" pairs. This is in addition to field/value insert style.

Full Changelog: 0.18.0...0.19.0