v0.20.0

Enhancements

• Add per-project Hex configuration. Configure Hex under the :hex key inside your project configuration in mix.exs
• Show location of package after running mix hex.build
• List all available Hex tasks when running mix hex
• List subtasks when running mix hex
• Remove tarball if it is invalid to avoid it being as cache in the future
• Show umbrella children mix.exs location in mix hex.outdated
• Add mix hex.owner transfer task
• Show improved error message on invalid configs
• Add mix hex.package fetch task
• Add mix hex.package diff task

Bug fixes

• Fix mirror_url config
• Fix api_url config
• Do no try to remove docs after reverting package – docs are already automatically removed