Been trying to know if there is an easy way to update the worldserver.conf when changes are committed to worldserver.conf.dist. Or it is necessary to do it manually always?
There is no automated way, however you can use the diff command to make it easy to spot the differences between your worldserver.conf and the new worldserver.conf.dist.
Assuming that you have those two files in the same folder, you can run:
diff worldserver.conf worldserver.conf.dist > worldserver.diff
this will generate a diff file worldserver.diff containing all the differences between worldserver.conf.dist and worldserver.conf so it will easy for you to spot what the new additions are and update your worldserver.conf accordingly.
When you're done you can of of course delete the worldserver.diff