This module serves as an easy, clean alternative to Exporter. Unlike
Exporter, it is not subclassed, but it simply exports a custom import()
into your namespace.

With Exporter::Tidy, you don't need to use any package global in your
module. Even the subs you export can be lexically scoped.

use Exporter::Tidy LIST
The list supplied to 'use Exporter::Tidy' should be a key-value list.
Each key serves as a tag, used to group exportable symbols. The values
in this key-value list should be array references. There are a few
special tags: