Redmine

Hi,
1) Want to know the difference between version 4.2.8 and 5.0.3
2) List of plugin support by both of the version
3) Can we install plugin omniauth_google for v5.0.3, if not can you provide other way or option
https://github.com/twinslash/redmine_omniauth_google

Note :- Please look into it, as its urgent request
Also when i tried to install omniauth_google for 5.0.3 version got below error

rake aborted!
LoadError: cannot load such file -- redmine_omniauth_google/hooks
/usr/local/rvm/gems/ruby-3.0.0/gems/zeitwerk-2.6.1/lib/zeitwerk/kernel.rb:35:in `require'
/usr/local/rvm/gems/ruby-3.0.0/gems/zeitwerk-2.6.1/lib/zeitwerk/kernel.rb:35:in `require'
/usr/local/rvm/gems/ruby-3.0.0/gems/activesupport-6.1.7/lib/active_support/dependencies/zeitwerk_integration.rb:51:in `require_dependency'
/data/taskman/plugins/redmine_omniauth_google/init.rb:2:in `<top (required)>'
/data/taskman/lib/redmine/plugin_loader.rb:31:in `load'
/data/taskman/lib/redmine/plugin_loader.rb:31:in `run_initializer'
/data/taskman/lib/redmine/plugin_loader.rb:108:in `each'
/data/taskman/lib/redmine/plugin_loader.rb:108:in `block in load'
/usr/local/rvm/gems/ruby-3.0.0/gems/activesupport-6.1.7/lib/active_support/callbacks.rb:427:in `instance_exec'
/usr/local/rvm/gems/ruby-3.0.0/gems/activesupport-6.1.7/lib/active_support/callbacks.rb:427:in `block in make_lambda'
/usr/local/rvm/gems/ruby-3.0.0/gems/activesupport-6.1.7/lib/active_support/callbacks.rb:198:in `block (2 levels) in halting'
/usr/local/rvm/gems/ruby-3.0.0/gems/activesupport-6.1.7/lib/active_support/callbacks.rb:604:in `block (2 levels) in default_terminator'
/usr/local/rvm/gems/ruby-3.0.0/gems/activesupport-6.1.7/lib/active_support/callbacks.rb:603:in `catch'
/usr/local/rvm/gems/ruby-3.0.0/gems/activesupport-6.1.7/lib/active_support/callbacks.rb:603:in `block in default_terminator'