Added rowIndex to colParser function

[abramsimon]

Adds another parameter to the custom colParser function callback that exposes the row index being processed. Zero-based. Adds an assert to an existing test to provide coverage.

The unit test for this was not executing correctly, so no assertions would fail under any conditions. I refactored the test to use async/await instead of done() and the test started working as expected.

Issue #373

[coveralls]

Pull Request Test Coverage Report for Build 243

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.421%

---

Totals
Change from base Build 238:	0.0%
Covered Lines:	664
Relevant Lines:	680

---

💛 - Coveralls