MongoDB upgrade - Upgraded MongoDB and drivers to mongodb-c-driver 1.5.1, libbson 1.5.1 and MongoDB v3.4.0 - The upstream mongodb-c-driver has deprecated the old OP_QUERY syntax with $-modifiers and old names like $orderby and $query, which will be removed from the driver. The new interface is more in the mongodb style, many former parameters (e.g. -limit, -skip, -project, -sort) went to the new "-opts" argument.
nx.tcl: pluralism reform part 3 - introduced simple plural form "mixins" and "filters" for introspection - moved differentiated interface into slot methods. the slot methods "get" stay symmetrically to "set", but additional methods "classes" or "methods" are used like "guard" to obtain partial results of the mixin and filter specs - changed info methods /cls/ info mixin classes -> /cls/ info mixins /cls/ info filter methods -> /cls/ info filters /obj/ info object mixin classes -> /obj/ info object mixins /obj/ info object filter methods -> /obj/ info object filters - dropped /cls/ info mixin guard /cls/ info filter guard /obj/ info object mixin guard /obj/ info object filter guard - added /cls/ mixin classes /cls/ filter methods /obj/ object filter methods /obj/ object mixin classes