Added:

Primary Stargate system - When the primary_stargate config option (false by default) is set to true, Primary Stargates will be prioritized while choosing preferred Stargate for a 7 or 8-chevron connection (Primary Stargates are set by default and can be added, changed or removed using the /sgjourney stargateNetwork primaryStargate command)
Protected block system - Certain Stargates and DHDs are now marked as "protected" and the protected_stargate_permissions and protected_dhd_permissions config options can be used to set the player permission level required to break it or modify it (by default requirement is set to 0, meaning every player can break and modify them) (Protection on Stargates and DHDs can be modified by the /sgjourney protection command)
Added "common_stargates" field to sgjourney structures - It is used to decide if the Structure should generate based on the current common_stargate_generation config option (When set to true, Structure will only generate when the config option is set to true; when false, Structure will only generate when the config option is set to false; when left out, Structure will always generate)
Added "stargate_modifiers" and "dhd_modifiers" fields to sgjourney Structures - These can be used to modify the block entities when the Structure generates without needing to change the structure file itself

Changes:

Common Stargates Datapack is now a built-in part of the mod (namespace for it is still "common_stargates") and can be activated by setting the common_stargate_generation config option to true
Universe and Pegasus Stargate dialing sequences can now be stopped by inputting the Point of Origin a second time
Changed how Stargate Connections and Stargates are stored internally - this shouldn't affect players in any way, but it could potentially lead to some unforseen bugs, so I'm mentioning it just in case