Log Message:
Update to 1.999827

Upstream changes:
1.999827 2021-10-03

 * Improve error message for missing library argument.

 * Skip tests that don't work on older Perls. Also skip tests that compare
   floating point numbers.

1.999826 2021-10-01

 * Improve documentation related to floating point literals.

 * Skip tests that fail due to Perl's broken handling of floating point literals
   before v5.32.0.