updated TabularData interface to return a List of columnNames
updated CSVTabularData and RowIterator implementation to match behavior of POI implementations concerning missing column names
fixed tabbing
cleanup based on code review
moved version to 2.0.0 and added change log entry
Merge branch 'fix-csv-tabular-data' of git://github.com/blicksky/griddle into blicksky-fix-csv-tabular-data

Conflicts:
	gradle.properties
Merge branch 'blicksky-fix-csv-tabular-data'