database abstraction layer

Changes for 0.06 - 2024-02-20T16:55:33Z

• Slurped data - improve keying fetchrow_hashref now uses slurped data on some optimised places fetchrow_hashref: fixed uninitialized variable in logger fetchrow_hashref: more verbose debugging on match AUTOLOAD: usage error if entry isn't a column AUTOLOAD: fix problem when no args are given on slurped data