6.1.4 / 2021-12-27

• fix(document): handle save with undefined nested doc under subdoc #11110
• fix(document): allow manually populating subdocument refs with create() #10856
• fix(populate): handles refPath underneath map of subdocuments #9359
• fix(update): throw error when calling findByIdAndUpdate with undefined id #11079 gramliu
• fix(mongoose): export ConnectionStates #11133 orgads
• fix(index.d.ts): unpack array when using generic type override with populate() #11027
• fix(index.d.ts): fix typings in Merge stage #11132
• fix(index.d.ts): PipelineStage.Merge interface definition is wrong #11109
• docs(typescript): add note about Schema.Types.ObjectId vs Types.ObjectId in document definition #10949
• docs(connection): clarify that "connected" and "open" are different #10886
• docs(populate): correct refPath example to not use on as a schema path name #11113
• docs: fix strictQuery example #11135 MontgomeryWatts