BIP merges @bipmerges@x0f.org

[bips] Merged PR from benthecarman: Allow Taproot outputs in BIP 322 https://github.com/bitcoin/bips/pull/1242

[bips] Merged PR from achow101: 371: Fix test formatting https://github.com/bitcoin/bips/pull/1236

[bips] Merged PR from MarcoFalke: Mention activation heights in BIP 341 🥕 https://github.com/bitcoin/bips/pull/1235

[bips] Merged PR from benthecarman: Clarify BIP 322 seralization requires a signed transaction https://github.com/bitcoin/bips/pull/1234

[bips] Merged PR from sipa: BIP341 test vectors https://github.com/bitcoin/bips/pull/1225

[bips] Merged PR from brandonblack: BIP341/342: Implementation clarifications https://github.com/bitcoin/bips/pull/1224

[bips] Merged PR from GambolingPangolin: Fixes a link in BIP 341 https://github.com/bitcoin/bips/pull/1231

[bips] Merged PR from katesalazar: BIP 0069: Fix broken link https://github.com/bitcoin/bips/pull/1206

[bips] Merged PR from tcharding: [BIP 157] Add missing words to sentence https://github.com/bitcoin/bips/pull/1182

[bips] Merged PR from JeremyRubin: Minor Updates to BIP-119 https://github.com/bitcoin/bips/pull/1215

[bips] Merged PR from kallerosenbaum: BIP 0174: Clarify use of PSBT_IN_FINAL_* when data is empty https://github.com/bitcoin/bips/pull/1221

[bips] Merged PR from katesalazar: Make Wikitext linguist-detectable https://github.com/bitcoin/bips/pull/1203

[bips] Merged PR from kallerosenbaum: BIP 370: Use PSBT_GLOBAL_FALLBACK_LOCKTIME in text https://github.com/bitcoin/bips/pull/1200

[bips] Merged PR from kallerosenbaum: BIP 0174: Fix typo in PSBT_OUT_BIP32_DERIVATION https://github.com/bitcoin/bips/pull/1198

[bips] Merged PR from kallerosenbaum: BIP 0174: Correct format of PSBT_GLOBAL_TX_MODIFIABLE https://github.com/bitcoin/bips/pull/1197

[bips] Merged PR from rage-proof: typo in bip-0078 https://github.com/bitcoin/bips/pull/1156

[bips] Merged PR from tcharding: [BIP 158] Fix grammar - remove 'was chosen as' https://github.com/bitcoin/bips/pull/1158

[bips] Merged PR from NicolasDorier: [BIP78] Fix client implementation when there is output substitution https://github.com/bitcoin/bips/pull/1171

[bips] Merged PR from JeremyRubin: Update BIP-119 Variable Names https://github.com/bitcoin/bips/pull/1118

[bips] Merged PR from fametrano: added test vector #5 for invalid extended keys https://github.com/bitcoin/bips/pull/921