0.11.0 • Aggregation stages $unset, $project, $sort and $unionWith, sorting in find(), $concat aggregation operator¶

Add the $unset aggregation stage (#4be311d4, !38)
Add the $project aggregation stage (#e27a6869, !38)
Add the $sort aggregation stage (#8040445f, !39)
Add the $unionWith aggregation stage (#d3773e41, !39)
Add the $concat aggregation operator (#892491e8, !37)
Add sorting in find()'s options (#c6b2acd8, !39)
Allow using the '/' notation on nullable fields (#d08211e1, !39)
Improve toString of Mongo iterables (#e8372cd1, !39)
Fix documentation error in the $add aggregation operator (#b6db3ff2, !37)
Fix outdated Pipeline documentation (#40c30ce3, !39)
Documentation improvements around aggregation pipelines (#bd23fefa, !41)
Forbid nullable documents in models, as MongoDB doesn't allow them (#5efad8f1, !39)