Revert "Set release date 2014-04-10"

This reverts commit 6e2b9d82fbea27c318f5ab31df05437337a27715.
Bump VERSION to 0.0.19_1
Ignore direnv files
Translate arrayrefs as "IN (?,?)" for ON hashrefs
Set version 0.0.20
Release version 0.0.20 (2014-06-13)
Unset release date
Start development on version 0.0.21_1
$sth->xarrays in scalar context returns undef on zero rows
Set version 0.0.22
Release version 0.0.22 (2014-06-30)
Merge tag '0.0.22'