Issue 29 - correctly deal with Windows CRLF, also fixed a slumbering bug where old symbols were not deleted before new mappings were added. Only a problem for char to EncounteredSymbol mapping
Javadoc on Header
Issue #31 - the error message for property conversion now includes cell and property references
Issue #28 - Date conversion is now interpreted in the strictest possible way by using SimpleDateFormat.setLenient(false)