BIP merges @bipmerges@x0f.org

[bips] Merged PR from Fonta1n3: HD Multisig derivation standard https://github.com/bitcoin/bips/pull/1072

[bips] Merged PR from achow101: BIP 371: Taproot Fields for PSBT https://github.com/bitcoin/bips/pull/1139

[bips] Merged PR from RCasatta: remove int_from_bytes in lift_x call since it is done internally https://github.com/bitcoin/bips/pull/1142

[bips] Merged PR from sanket1729: BIP118: Key version should be 0x01 https://github.com/bitcoin/bips/pull/1141

[bips] Merged PR from ajtowns: Update BIP 118 for taproot, rename to ANYPREVOUT https://github.com/bitcoin/bips/pull/943

[bips] Merged PR from chirag64: Updated URL of the JavaScript reference implementation https://github.com/bitcoin/bips/pull/1127

[bips] Merged PR from achow101: BIP 86: Key Derivation for Single Key P2TR Outputs https://github.com/bitcoin/bips/pull/1137

[bips] Merged PR from tcharding: Remove typo: plural https://github.com/bitcoin/bips/pull/1136

[bips] Merged PR from Raulo: Replaces Bech32 by Bech32m in BIP341 https://github.com/bitcoin/bips/pull/1133

[bips] Merged PR from vasild: BIP155: extra-clarify the semantic of sendaddrv2 https://github.com/bitcoin/bips/pull/1134

[bips] Merged PR from achow101: psbt2: Fix field number counting https://github.com/bitcoin/bips/pull/1135

[bips] Merged PR from molnard: Fix word duplication https://github.com/bitcoin/bips/pull/1082

[bips] Merged PR from rage-proof: BIP-0078: fix typo https://github.com/bitcoin/bips/pull/1027

[bips] Merged PR from AdamISZ: update Joinmarket BIP78 status https://github.com/bitcoin/bips/pull/1022

[bips] Merged PR from AndreasGassmann: BIP85: Add AirGap Vault implementation https://github.com/bitcoin/bips/pull/1132

[bips] Merged PR from eMaringolo: [BIP 39] Add reference implementation https://github.com/bitcoin/bips/pull/1095

[bips] Merged PR from pinheadmz: BIP173: segwit address witness version is one 5-bit char not one byte https://github.com/bitcoin/bips/pull/1051

[bips] Merged PR from Crypt-iQ: BIP 341: fix tuple index in taproot_tweak_pubkey https://github.com/bitcoin/bips/pull/1109

[bips] Merged PR from dgpv: BIP88: add Acknowledgements section https://github.com/bitcoin/bips/pull/1123

[bips] Merged PR from t-bast: BIP 174: clarify key uniqueness https://github.com/bitcoin/bips/pull/1120