Checklist for release 2.1

[AntonPetrov]

• [ ] Make sure all tests pass
• [ ] Generate precomputed library
• [ ] Update version info in Readme and shared.py
• [ ] Deploy the latest image on Job Dispatcher and test the API
• [ ] Merge pull request
• [ ] Check that Docker Hub updated the latest image
• [ ] Publish GitHub release
• [ ] Publish blog post
• [ ] Update Timeline Google Doc
• [ ] Deploy new web app on rnacentral.org
• [ ] Tweet
• [ ] Create a checklist for the next release