v4.5.0

Changes from v4.4.0:

• Add decimal separator option to fromCSV(). (#160)
• Add table object() method to extract individual row objects.
• Add table values() method to return an iterator over column values, respecting filter and orderby criteria.
• Add table array() method to return a column value array, respecting filter and orderby criteria.
• Add more detailed messages for variable and function lookup errors.
• Fix error message for when no window functions are allowed.
• Refactor expression parser error message handler.
• Deprecate table columnArray() method in favor of table array() method.