This is a mostly technical release. It takes the index from 106M to 164M documents. Zero Downtime Upgrades and halved memory consumption The initial focus of the release was to address the sometimes lengthy downtimes that have plagued the project when loading a new index. There is a somewhat lengthy write-up about this here; but the short version is that this was very successful and a drastic optimization, removed not only the needed downtime, but added neat new features and slashed the RAM r...