chore: Add section for Rails 6 gem version support and missing Changelog line

Author: vprigent

Changelog.md

@@ -1,5 +1,6 @@
 # Changelog
 
+- Allow multiple data migration paths https://github.com/ilyakatz/data-migrate/pull/331
 - Fix db:prepare:with_data task on [Rails 7.2](https://github.com/ilyakatz/data-migrate/pull/339)
 
 # 11.0.0

README.md

@@ -38,6 +38,11 @@ table to track all migrations.
 
 Support Rails 6.1 through 7.2
 
+For **Rails 6.0** support, please use gem version `9.1.x`:
+
+```ruby
+gem 'data_migrate', '~> 9.1.0'
+```
 
 #### v1