Polishing and new features

This release is meant to polish up a few bugs and features.

Feature/Bug changelog:

• Added Locale. Implement Ilocale or override DefaultLocale and set in Universal.setLocale()
• Beta version uses semantic scheme now
• UniversalCommand automatically does a permission check before executing command for better consistency across platforms.
• Fixed Vault load bug which was caused because Vault was being used without checking if it was a dependecy/softdependency
• Added PluginData which allows reading plugin metadata (Not working on Sponge)
• New ReadTheDocs site: https://fernapi.readthedocs.io/en/stable/
• (Spigot) PluginYMLMustDefineCommand is thrown when the command isn't defined in the plugin.yml as required
• Fern Config Manager has been updated to 1.1.3
• Build tools now use OpenJDK11
• Sorter is now ListUtil