This is version 2.0.1 of Random Signature Quotes for Gmail™, which includes the ability to add quotes to the signature for replies, not just initially composed messages. This has been a highly requested feature for many years now. 2.0.1 also includes upgrades to the extension architecture, moving from manifest v2 to v3, Chrome's newer extension platform.
What's Changed
- Upgrade to Manifest v3 and Implement Quote Insertion in Replies by @jamesmortensen in #5
Full Changelog: v0.9.2.1...v2.0.1-release-notes