CrazyCrates

Added:

• Ability to require a permission to open a crat
• New Message: No-Crate-Permission: '&cYou do not have permission to use that crate.'
• New Permissions: crazycrates.open.<crate_name or *>
• A new set of internal placeholders: %crate(s)_opened%
• PlaceholderAPI allows us to add new placeholders!
• Ability to run commands when a crate is opened, it defaults too false.

Changes:

• Added plugin-config.yml
• Metrics actually shuts down when you reload the plugin after turning off metrics.
• The plugin prefix is no longer automatically appended, you must add %prefix% to every message.
• Added new config options related to gui-customizer and sounds in config.yml

Fixed:

• Cosmic Crates should no longer error. #599
• Total-Crates in data.yml would be overwritten if adding a new crate.
• Check if the crate type is cosmic before marking it as "open", We want the key to be taken before being marked as open so people can't abuse it.