Collecting feedback about MLEB compatibility policy here in order to better understand whether it should be changed, and if so, how.
Core does not support supporting multiple versions from one code base
https://github.com/SemanticMediaWiki/SemanticMediaWiki/issues/3626#issuecomment-524636116
Not supporting at least one LTS version all the time leaves out some users
https://github.com/SemanticMediaWiki/SemanticMediaWiki/issues/3626#issuecomment-525355200