Modules lacking documentation

Shown here with the first commit message, since they don't have any documentation.

mod_anti_spam: New module for spam filtering (pre-alpha)
mod_auto156: Queries for XEP-0156 TXT records and prints in JSON format
mod_block_s2s_subscriptions: New module to block incoming presence subscriptions from non-contacts on selected remote hosts
mod_block_strangers: Module to block message and iqs from people not on your roster
mod_block_subscribes: Block inbound and outbound subscription requests (useful to prevent implicit roster modification)
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
mod_carbons_adhoc: Initial commit.
mod_carbons_copies: Initial commit; allow the user to enable v0 style carbons
mod_compact_resource: Enforces short random resources
mod_compat_bind: Compatibility (ugh) with clients that send the resource bind to the login host (ugh)
mod_compat_vcard: Handle vcard requests sent to full JIDs (a spec violation commited by older versions of ejabberd and possibly others) - replaces vcard_compatibility option from Prosody 0.8
mod_deny_omemo: Prevents publishing and retreival of OMEMO PEP nodes
mod_email: Initial prototype module that allows other modules to send email
mod_fallback_vcard: Generates missing vcards from a template
mod_filter_words: Very basic module in its early stages, to filter words in messages
mod_groups_internal: new module for grouping beyond mod_adhoc_groups
mod_groups_migration: module helping migration to groups
mod_groups_muc_bookmarks: manage PEP (XEP-0048) bookmarks of group members
mod_groups_shell: add an admin shell command for updating bookmarks
mod_host_blacklist: Similar to mod_s2s_blacklist, but stanza-based. Works between hosts on the same server, at a slight performance impact.
mod_http_hostaliases: Give HTTP hosts additional aliases
mod_http_user_count: HTTP module to report the current number of online users or sessions
mod_inotify_reload: Reload modules when their code changes
mod_invites_groups: factor group handling out of mod_invites_register
mod_invites_register_api: New module to allow turning invites into accounts via a HTTP API
mod_log_events: Module to log all events on the server/host
mod_log_sasl_mech: Logs authentication mechanism used
mod_mamsub: Experimental implementation of MAM subscriptions
mod_muc_access_control: Module to allow restricting rooms to a list of JIDs, which can include domains
mod_muc_dicebot: A thing to roll dice
mod_muc_gateway_optimize: New module to optimize muc presence to remote gateways
mod_muc_restrict_avatars: Block MUC participant avatars for non-members
mod_muc_search: Implementation of the search.jabber.network XMPP API
mod_password_policy: Initial commit.
mod_pep_atom_categories: Add a module to index categories in Atom entries
mod_pinger: Added from /files/
mod_pubsub_pivotaltracker: Accept activity notifications from Pivotal Tracker web hooks and relay them to a pubsub node
mod_register_dnsbl_firewall_mark: Another copy of DNSBL module, this time creating "user marks" for mod_firewall
mod_s2s_auth_samecert: Authenticate incoming s2s connection if certificate matches that of an established outgoing s2s connection
mod_saslauth_muc: Initial commit. Implements SASL auth for MUC rooms <http://xmpp.org/extensions/inbox/remote-auth.html>.
mod_service_directories: Initial commit. Untested. Support for both directory and buddy use cases. Incomplete pubsub support (only getting all items supported).
mod_statistics_auth: Collects statistics on number of successful or failed authentication attempts
mod_statistics_cputotal: Module that collects accumulated CPU usage statistics
mod_statistics_mem: Module that collects memory usage stats from /proc
mod_statsd: First commit
mod_storage_multi: Multi-backend storage module (WIP)
mod_streamstats: New module that streams live stats from Prosody over a TCP stream
mod_vcard_command: a simplistic way to get and set vcard data for registered users