Generated docs for 1.13.1
Release notes for 1.13.1
Bump driver versions
Add late fix to the NOTES file
Bump cluster version to 1.13.2. Differentiate between cluster version and disk version instantiation.
Renamed current RDB_IMPLEMENT_SERIALIZABLE to RDB_IMPLEMENT_SERIALIZABLE_*_SINCE_1_13 so people stop using them once there has been a format change.
Use LATEST_OVERALL for serializing the cluster_version_t
Renamed _1_13 macros to _v1_13
Added `recency` to backfill_chunk_t::delete_key_t serialization
Renamed INSTANTIATE_SINCE_v1_13 to INSTANTIATE_SERIALIZABLE_SINCE_v1_13
Introduced new macro INSTANTIATE_SERIALIZABLE_FOR_CLUSTER
Merge branch 'v1.13.x' into daniel_2579
Merge branch 'v1.13.x' into next

Conflicts:
	src/rdb_protocol/btree.cc
	src/rdb_protocol/btree_store.cc
	src/rdb_protocol/wire_func.cc
	src/unittest/rdb_btree.cc