Resolve "Database driver should return entry on INSERT and UPDATE"
Closes #48 (closed) Result of insert, update and delete are returned on database modifications. Transforms Promise to Promise for update, insert, deleteEqual, deleteLowerThan and deleteWhere. Attention : Merge !40 (merged) should precede this merge, and this version's deleteWhere is to be kept.
Edited by Hachem STG_OUERTANI