More POD
Reworked basic tests.

No longer rely on reams of the same tests that match/don't match, depending
on the pattern. This is confusing to maintain, and runs too many tests.

Split failing tests into their own file.
Make prefixes optional when using named bases.
New test for -sign
Rename files
Fix the handling of -case
Tests for named -base

Wrote new tests, and merged tests into a single file.
Failing tests for named bases.
Merge branch 'master' of github.com:Abigail/Regexp-Common510-Number