doc: update release-notes and bips.md for BIP111
Also includes a09db7c [trivial] Minor format fixes
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BIPs that are implemented by Zcash (up-to-date up to **v1.1.0**):
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* Numerous historic BIPs were present in **v1.0.0** at launch; see [the protocol spec](https://github.com/zcash/zips/blob/master/protocol/protocol.pdf) for details.
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* [`BIP 111`](https://github.com/bitcoin/bips/blob/master/bip-0111.mediawiki): `NODE_BLOOM` service bit added, but only enforced for peer versions `>=170004` as of **v1.1.0** ([PR #2814](https://github.com/zcash/zcash/pull/2814)).
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@ -20,3 +20,20 @@ inputs each. Starting from this release, `-mempooltxinputlimit` will be enforced
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before the Overwinter activation height is reached, but will be ignored once
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before the Overwinter activation height is reached, but will be ignored once
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Overwinter activates. The option will be removed entirely in a future release
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Overwinter activates. The option will be removed entirely in a future release
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after Overwinter has activated.
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after Overwinter has activated.
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`NODE_BLOOM` service bit
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------------------------
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Support for the `NODE_BLOOM` service bit, as described in [BIP
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111](https://github.com/bitcoin/bips/blob/master/bip-0111.mediawiki), has been
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added to the P2P protocol code.
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BIP 111 defines a service bit to allow peers to advertise that they support
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bloom filters (such as used by SPV clients) explicitly. It also bumps the protocol
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version to allow peers to identify old nodes which allow bloom filtering of the
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connection despite lacking the new service bit.
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In this version, it is only enforced for peers that send protocol versions
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`>=170004`. For the next major version it is planned that this restriction will be
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removed. It is recommended to update SPV clients to check for the `NODE_BLOOM`
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service bit for nodes that report versions newer than 170004.
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