etl

c52d2105 - to_string_helper: add string conversion helper for denominated integers (#408)

to_string_helper: add string conversion helper for denominated integers (#408) With default format it will only print the meaningful fractional digits. If the format specifies the precision, it will print at least that many fractional digits. Signed-off-by: Benedek Kupper <benedek.kupper@streamunlimited.com>