Numbers are returned as real numbers, not strings;
Numbers are returned as real numbers, not strings;

This is needed for pipeline_wide_parameters as each value is destringified
independently and the JSON writer would otherwise force writing numbers as
strings

Ensembl/ensembl-hive,Ensembl/ensembl-hive,Ensembl/ensembl-hive,Ensembl/ensembl-hive