Transpose metrics so that there is only one record for each time period containing all the metrics instead of a record for each metric.

e.g. convert 

    {time_1, instance, metric_A, Average},
    {time_1, instance, metric_B, Average},
    {time_1, instance, metric_C, Average}
    {time_2, instance, metric_A, Average}
    ...
to
    {time_1, instance, metric_A, metric_B, metric_C}
    {time_2, instance, metric_A, metric_B, metric_C}



More options for setting the job id when the job is created.
Tidy script and comments
Add test for invalid AWS region