IETF RFC 4180-compliant CSV Reader for Salesforce

After several failed attempts at creating an IETF RFC 4180-compliant CSV reader for Salesforce, I finally have a candidate of an Apex Class that may be able to fit the bill for reading a compliant CSV file and returning a nested List where the outer List contains row records, and the inner List contains the sequential values in that row.

Edit

Posting the code within a PRE tag did not work. Let's try this download link instead.