Restore Tidelift; drop Open Collective from the docs home page

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+---
+
+tidelift: rubygems/ransack

README.md

@@ -61,6 +61,16 @@ directly related to bug reports, pull requests, or documentation improvements.
 to you. The more people who are using the project, the quicker we can find and
 fix bugs!
 
+## Ransack for enterprise
+
+Available as part of the [Tidelift Subscription](https://tidelift.com/subscription/pkg/rubygems-ransack?utm_source=rubygems-ransack&utm_medium=referral&utm_campaign=enterprise&utm_term=repo).
+
+The maintainers of Ransack and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/rubygems-ransack?utm_source=rubygems-ransack&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)
+
+## Security contact information
+
+To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. See the [Security Policy](.github/SECURITY.md) for supported versions.
+
 ## Contributors
 
 Ransack was created by [Ernie Miller](http://twitter.com/erniemiller) and is developed and maintained by:

docs/index.md

@@ -67,7 +67,6 @@ The [Ransack Demo application](https://github.com/activerecord-hackery/ransack_d
 
 To support the project:
 
-* Consider supporting us via [Open Collective](https://opencollective.com/ransack/backers/badge.svg)
 * Use Ransack in your apps, and let us know if you encounter anything that's
 broken or missing. A failing spec to demonstrate the issue is awesome. A pull
 request with passing tests is even better!
@@ -79,6 +78,16 @@ directly related to bug reports, pull requests, or documentation improvements.
 to you. The more people who are using the project, the quicker we can find and
 fix bugs!
 
+## Ransack for enterprise
+
+Available as part of the [Tidelift Subscription](https://tidelift.com/subscription/pkg/rubygems-ransack?utm_source=rubygems-ransack&utm_medium=referral&utm_campaign=enterprise&utm_term=docs).
+
+The maintainers of Ransack and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/rubygems-ransack?utm_source=rubygems-ransack&utm_medium=referral&utm_campaign=enterprise&utm_term=docs)
+
+## Security contact information
+
+To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. See the [Security Policy](https://github.com/activerecord-hackery/ransack/security/policy) for supported versions.
+
 ## Contributors
 
 Ransack was created by [Ernie Miller](http://twitter.com/erniemiller) and is developed and maintained by:
@@ -93,26 +102,3 @@ Alumni Maintainers
 - [Ryan Bigg](http://twitter.com/ryanbigg)
 
 This project exists thanks to all the people who contribute. <img src="https://opencollective.com/ransack/contributors.svg?width=890&button=false" alt="Contributors" />
-
-
-## Backers
-
-Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/ransack#backer)]
-
-<a href="https://opencollective.com/ransack#backers" target="_blank"><img src="https://opencollective.com/ransack/backers.svg?width=890" alt="Backers" /></a>
-
-
-## Sponsors
-
-Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/ransack#sponsor)]
-
-<a href="https://opencollective.com/ransack/sponsor/0/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/0/avatar.svg" alt="Sponsor 0" /></a>
-<a href="https://opencollective.com/ransack/sponsor/1/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/1/avatar.svg" alt="Sponsor 1" /></a>
-<a href="https://opencollective.com/ransack/sponsor/2/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/2/avatar.svg" alt="Sponsor 2" /></a>
-<a href="https://opencollective.com/ransack/sponsor/3/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/3/avatar.svg" alt="Sponsor 3" /></a>
-<a href="https://opencollective.com/ransack/sponsor/4/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/4/avatar.svg" alt="Sponsor 4" /></a>
-<a href="https://opencollective.com/ransack/sponsor/5/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/5/avatar.svg" alt="Sponsor 5" /></a>
-<a href="https://opencollective.com/ransack/sponsor/6/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/6/avatar.svg" alt="Sponsor 6" /></a>
-<a href="https://opencollective.com/ransack/sponsor/7/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/7/avatar.svg" alt="Sponsor 7" /></a>
-<a href="https://opencollective.com/ransack/sponsor/8/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/8/avatar.svg" alt="Sponsor 8" /></a>
-<a href="https://opencollective.com/ransack/sponsor/9/website" target="_blank"><img src="https://opencollective.com/ransack/sponsor/9/avatar.svg" alt="Sponsor 9" /></a>