I was mixing up the versions there. The new version needs to be 20, since 19 was already used for 4.13. We can't use 18 since that was reserved by the betas from which we can never upgrade.
Contributes to issue CURA-8466.
It is no longer used since we've removed the Fill Gaps Between Walls setting. This setting is no longer referred to from CuraEngine.
Contributes to issue CURA-8466.
Also removed this mistake from Arachne Beta 1. Cura 4.13 already had stack version 5, so it's no longer necessary to have both.
Contributes to issue CURA-8466.
It's going to upgrade from 4.13 to 5.0. We will not support an upgrade path from the alpha/preview-betas to the stable release.
Contributes to issue CURA-8466.
