0.3.1

This is the first release from a new maintainer (@djc). Thanks to @srijs for creating and maintaining this crate!

Most important changes:

• Upgrades to rand 0.10 (which requires an MSRV bump to 1.85)
• Makes the rand dependency optional (allowing to no_std support)
• Replaces the pin-project dependency with pin-project-lite

What's Changed

• Upgrade rand to 0.9. by @khuey in #33
• update link to backoff strategies paper by @ibotty in #25
• Basic CI by @djc in #36
• Tweaks by @djc in #37
• Docs by @djc in #38