Make bulk methods always return array of documents #1268

Job	Run time
Setup & Build Docker Image	2m 33s
Unit Test	56s
Adapter Tests (MariaDB)	2m 20s
Adapter Tests (MySQL)	2m 36s
Adapter Tests (Postgres)	1m 57s
Adapter Tests (SQLite)	1m 17s
Adapter Tests (MongoDB)	1m 15s
Adapter Tests (Mirror)	3m 23s
Adapter Tests (SharedTables/MariaDB)	2m 15s
Adapter Tests (SharedTables/MySQL)	2m 48s
Adapter Tests (SharedTables/Postgres)	1m 51s
Adapter Tests (SharedTables/SQLite)	1m 22s
Adapter Tests (SharedTables/MongoDB)	1m 10s
	25m 43s

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