v0.8.5.9

This is a minor release.

Highlights:

• improved syntax compliance across the scripts and more code style improvements
• multiple scripts: wait a bit before destroying ipsets to allow the kernel to catch up
• *common: check_deps: when processing alternative deps, use IFS instead of replacing the delimiter in arguments
• *common: support bash v4.0+

Full Changelog: v0.8.5.8...v0.8.5.9