Merge pull request #351 from meatballhat/merging-v2.5-stable

Merging v2.5 stable
Handling signals while "sleeping"
Backporting signal handling while "sleeping" from #352
Merge pull request #352 from meatballhat/handle-signals-in-sleep-loop

Handling signals while "sleeping"
Merge pull request #353 from meatballhat/backport-handle-signals-in-sleep-loop

Backporting signal handling while "sleeping" from #352
Preparing for 2.5.3 release
Merge pull request #354 from meatballhat/v2.5.3-prep

Preparing for 2.5.3 release
Adjusting some documentation around rake task, cli, env vars

[ci skip]
Merge pull request #355 from meatballhat/documentation-cleanup

Adjusting some documentation around rake task, cli, env vars
Merge remote-tracking branch 'upstream/v2.5-stable' into merging-v2.5-stable

Conflicts:
	.rubocop.yml
	test/cli_test.rb