Add a bit of documentation
Add synopsys
Move strict up
Improve error of DBI->connect

Use croak instead of die
Use || instead of 'or' RT #87208
Rewrite error message
Add missing return statements
Use interpolation instead of concatenation
Improve POD docs
Use autoflush instead
Add version command
Move doubleup to script dir
Add tests for cmd 'version'
0.4.2