Supported XEPs
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RFC-3921: 2.2.2.1. Show
XEP-0012: Last Activity
XEP-0030: Service Discovery
XEP-0054: vcard-temp
XEP-0092: Software Version
XEP-0100: Gateway Interaction (partial)
XEP-0115: Entity Capabilities
XEP-0118: User Tune
XEP-0172: User Nickname
XEP-0196: User Gaming
XEP-0199: XMPP Ping
XEP-0202: Entity Time
XEP-0224: Attention

TODO
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RFC-3921: 2.2.2.2. Status
XEP-0084: User Avatar
	- Need to cache in database
XEP-0094: Agent Information
	- Deprecated, but should still be supported
XEP-0100: Gateway Interaction
	- Deregister user
	- Actually store registration details
XEP-0106: JID Escaping
    - use JID.escapeNode() and JID.unescapeNode()
    - May not be necessary since we only allow numbers
XEP-0144: Roster Item Exchange
	- Keep track of requests via SQL
XEP-0184: Message Delivery Receipts
	- For pidgin: install x11-plugins/pidgin-xmpp-receipts
XEP-0197: User Viewing
XEP-0280: Message Carbons
    - Used to mirror messages sent through discord
    - Requires privileged entity (xep-0356)
XEP-0308: Last Message Correction
XEP-0333: Chat markers
XEP-0356: Privileged Entity
XEP-0369: Mediated Information eXchange (MIX)