NXP-14790: write only incremental updates to documents; save() immediately writes to the repository TODO undo log
NXP-14825: Don't fetch binary fulltext when fulltext is disabled
NXP-14790: incremental updates using minimal diffs for MongoDB
NXP-14790: improve treatment of empty lists/arrays, equivalent to null or no value
NXP-14845: Add way to log slow NXQL queries