Exception on schematic loading

When loading a schematic SBR tries to determine the order based on a number in the schematic name if present. This number is used for ordering. However if the number was stupidly large an exception was thrown which cancelled the loading. this is now fixed and those numbers will be just ignored.

Preview subscription
The schematic preview was completely reworked. you can now subscribe to previews of other players to see what they do.

I changed the settings command in order to accomplish this. It is now

/sbrs preview subscribe
/sbrs preview unsubscribe
/sbrs preview enable <true|false>
The limitation is that once you subscribe to another preview you can no longer see your own one.

This feature was a preview for my patreons for over a month now. Over there is also an extended description how it works. https://www.patreon.com/posts/pre-release-of-2-73159897



Entity preview

When previewing a schematic which contains entities the entities will be spawned in the world. Those are now ignored and not displayed in the preview.