prosody.cfg.lua.dist: Remove allow_registration in favor of invites This settings should now only be used by public servers, which have their own documentation

prosody.cfg.lua.dist: Comment improvements: s2s authentication

prosody.cfg.lua.dist: Comment improvements: authentication

prosody.cfg.lua.dist: Improve section-like layout via headers and spacing

prosody.cfg.lua.dist: Comment improvements

prosody.cfg.lua.dist: Update s2s_secure_auth comment and default

prosody.cfg.lua.dist: TURN configuration improvements and example

prosody.cfg.lua.dist: Enable csi_simple by default It was added here in 2018, and at that time probably a bit too new to be enabled by default. Times change, and most people have this enabled now.

usermanager, mod_saslauth: Default to internal_hashed if no auth module specified The default config was updated in this way long ago, but if no option was present in the config, Prosody would load internal_plain. This change can result in changes (for the better) for people using very old configuration files lacking an 'authentication' setting.

prosody.cfg.lua.dist: Remove require_encryption options Reasons: - These now default to enabled when not specified since 38b5b05407be - Practically all servers require encryption these days for c2s/s2s. - Disabling encryption can be considered a special case that doesn't need to be in the default config file.