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6d0ea4cf5bdoc: add release notes (Andrew Toth)a2b1c86903txospenderindex: disable bloom filters to optimize disk usage (Andrew Toth) Pull request description: LevelDB bloom filters are only consulted on `Get` point reads. This can be verified in https://github.com/bitcoin/bitcoin/blob/master/src/leveldb/table/table.cc#L224-L228. `InternalGet` is the only place that consults the filter, and it is only reached via a `Get` or `Exists` point read. The filters are never consulted for iterator seeks with an iterator created via `NewIterator`. txospenderindex only reads via iterator seeks, so building them is wasted effort and space. For a db as large as txospenderindex, this results in measurable performance and disk usage. On master, a full sync took 4h37m, and the resulting db was 85.0 GiB. On this branch, a full sync took 3h57m, and the resulting db was 80.9 GiB. So this is a sync speedup of 39 minutes (1.17x), and a disk space reduction of 4.2 GiB. ACKs for top commit: l0rinc: ACK6d0ea4cf5bsedited: Re-ACK6d0ea4cf5bfjahr: Code review ACK6d0ea4cf5bTree-SHA512: fb88b9f9a16ff31562d388e3fd9fd9590c7864dbe6093cd9430ecbce9cdc3f2a8d3fc612aade743d26ad4c6eca1e5dc9b3f1ca28d75caea1209e5c784895405d