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Fix some edge cases when using a non-comma delimiter and when using a whitespace character as a delimiter (like a tab).

Adds a new LineNumber property that's compatible with the one in Microsoft.VisualBasic.FileIO.TextFieldParser (#6).

Adds some configuration properties to match properties from the VB TextFieldParser:

• Delimiters (as a string[] even though this parser only supports a single, one-character delimiter)
• HasFieldsEnclosedInQuotes
• TrimWhiteSpace

See issue #1 for more details.

The first release.