commands for managing plugins

[banister]

Now we have a lot of plugins available it's become important for the user to manage them properly from within pry. This functionality could be provided by one command or a suite of commands, but the minimum functionality should be:

• List which plugins are installed
• List which plugins are active.
• View a list of all available plugins on rubygems, with descriptions, and their dependencies
• Possibly install new plugins
• Possibly uninstall plugins
• Possibly disable active plugins
• Possibly enable deactivated plugins

If we want to allow enabling/disabling plugins, it is important we refactor the plugin system and provide it with a few hooks and a way of defining plugin functionality so that they can be activated/deactivated on demand.

Further, this would allow for the proper treatment of plugins like pry-nav which monkeypatch pry core methods

[kyrylo]

Possible duplication: #348

[kyrylo]

A marked in bold entry indicates that it has been implemented:

• List which plugins are installed
• List which plugins are active.
• View a list of all available plugins on rubygems, with descriptions, and their dependencies
• Possibly install new plugins
• Possibly uninstall plugins
• Possibly disable active plugins
• Possibly enable deactivated plugins

Currently, I'm waiting for Ryan's (@rf-) refactoring of tests to be merged with master. I haven't added any single test on my branch for this new functionality: I just don't want to resolve a ton of merge conflicts in the end.

[banister]

also see: #348

[rf-]

Closing this in favor of #699