Utility functions

Here is the list of utility functions available

function	description
convert	Merge multiple dbworkload statistic CSV files.
csv	Generate CSV files from a YAML data generation file.
gen_stub	Generate a dbworkload class stub.
html	Save charts to HTML from the dbworkload statistics CSV file.
merge_csvs	Merge multiple dbworkload statistic CSV files.
merge_sort	Merge-sort multiple sorted CSV files into 1+ files.
plot	Plot terminal charts from the statistics CSV file.
yaml	Generate YAML data generation file from a DDL SQL file.