[secp256k1] Merged PR from niooss-ledger: Fix some misspellings https://github.com/bitcoin-core/secp256k1/pull/1634 

 [secp256k1] Merged PR from jonasnick: release cleanup: bump version after 0.6.0 https://github.com/bitcoin-core/secp256k1/pull/1633 

 [secp256k1] Merged PR from jonasnick: release: prepare for 0.6.0 https://github.com/bitcoin-core/secp256k1/pull/1631 

 [secp256k1] Merged PR from theStack: Clear sensitive memory without getting optimized out (revival of #636) https://github.com/bitcoin-core/secp256k1/pull/1579 

 [secp256k1] Merged PR from achow101: Name public API structs https://github.com/bitcoin-core/secp256k1/pull/1628 

 [secp256k1] Merged PR from hebasto: test, ci: Lower default iteration count to 16 https://github.com/bitcoin-core/secp256k1/pull/1581 

 [secp256k1] Merged PR from hebasto: cmake, test: Add `secp256k1_` prefix to test names https://github.com/bitcoin-core/secp256k1/pull/1582 

 [secp256k1] Merged PR from real-or-random: util: Remove unused (u)int64_t formatting macros https://github.com/bitcoin-core/secp256k1/pull/1625 

 [secp256k1] Merged PR from hebasto: ci: Update macOS image https://github.com/bitcoin-core/secp256k1/pull/1624 

 [secp256k1] Merged PR from theStack: musig: ctimetests: fix _declassify range for generated nonce points https://github.com/bitcoin-core/secp256k1/pull/1619 

 [secp256k1] Merged PR from real-or-random: build: 45839th attempt to fix symbol visibility on Windows https://github.com/bitcoin-core/secp256k1/pull/1595 

 [secp256k1] Merged PR from jonasnick: Remove unused scratch space from API https://github.com/bitcoin-core/secp256k1/pull/1620 

 [secp256k1] Merged PR from hebasto: cmake: Set top-level target output locations https://github.com/bitcoin-core/secp256k1/pull/1553 

 [secp256k1] Merged PR from jonasnick: examples: do not retry generating seckey randomness in musig https://github.com/bitcoin-core/secp256k1/pull/1616 

 [secp256k1] Merged PR from Cheapshot003: #1570 improve examples: remove key generation loop https://github.com/bitcoin-core/secp256k1/pull/1599 

 [secp256k1] Merged PR from roconnor-blockstream: f can never equal -m https://github.com/bitcoin-core/secp256k1/pull/1603 

 [secp256k1] Merged PR from jonasnick: Add module "musig" that implements MuSig2 multi-signatures (BIP 327) https://github.com/bitcoin-core/secp256k1/pull/1479 

 [secp256k1] Merged PR from hebasto: cmake: Clean up testing code https://github.com/bitcoin-core/secp256k1/pull/1554 

 [secp256k1] Merged PR from theStack: doc: fix typos in `secp256k1_ecdsa_{recoverable_,}signature` API description https://github.com/bitcoin-core/secp256k1/pull/1604 

 [secp256k1] Merged PR from hebasto: cmake: Introduce `SECP256K1_APPEND_LDFLAGS` variable https://github.com/bitcoin-core/secp256k1/pull/1600