Fix stacked bar chart event in the index emitted.  Because the stacked bar chart renders the measure column in reverse to match the legend, we need to emit the event column index in reverse as well.
Merge pull request #52 from midoringo8823/bug_fix

Fix stacked bar chart event in the index emitted.  Because the stacked b...
Check if formatter is defined for columns in the transpose transformer, if a formatter is set, all columns except for the label column just have the same formatter.  Apply this formatter in the transposed columns.
Merge pull request #53 from midoringo8823/bug_fix

Check if formatter is defined for columns in the transpose transformer, ...