Ruby 3.0.0 Compatibility: Change &Proc.new to &block

[margstan]

Issue Type: Bug

Fixes / Relates To: No issue

Changes Included:

• Change &Proc.new to &block

Check List:

• [x] Includes adequate test coverage for changes made.
• [x] Includes new or updated documentation.
• [x] Includes new or updated usage examples.

For more information on check list items, please see the Contributors Guide.

[CLAassistant]

All committers have signed the CLA.

[TimAdloop]

Bump

[osowskit]

Tested this locally and works in both 2.7 and 3. Moving to a separate branch to track Ruby 3 changes. Thanks for updating this!