v0.6.0

• Changed config.json to config.js.
• Deleting joining messages is now configurable.
• Ban and unban users before they join. (with id)
• Merged excludedChannels and excludedGroups into excludeLinks.
• Added warning channels/groups' usernames.
• Check captions and edited messages for links and usernames.

Minor Changes:

• Overall stability improved.
• Username mentions are now case insensitive.
• Notifying unbanned user in all cases.
• Made custom command case insensitive.
• Removed an extra step from addcommand.
• Sorting groups and staff lists alphabetically.