fish: retire fisher_yates_shuffle()

[mknos]

• Reduce code that needs to be maintained by using the shuffle() function from List::Util
• Small declarations change: explicitly import getopts() function

[briandfoy]

changes: use List::Util instead of implementing our own shuffle

[coveralls]

Pull Request Test Coverage Report for Build 12590737844

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.7%) to 72.464%

---

Totals
Change from base Build 12578193049:	-0.7%
Covered Lines:	350
Relevant Lines:	483

---

💛 - Coveralls