Added an extra taxonomy id for S. cerevisiae as now EntrezGene for yeast is attached to the strain level

corresponding table for which is_current is 1.

Properly quote the database name when deleting deprecated entries.

Subroutine added to optionally wrap values into arrays. Checks to see if the value is already an array and if so returns it untouched.

Updates for execute_into_hash() which now allows you to process a query which could return the same key multiple times and can support parameters being passed into the statement prepare() method.