- Merge release notes fragments into release-notes.md
- Remove downgrading notes (as I understand this pertains to `<0.15`,
this doesn't warrant mentioning anymore)
Tree-SHA512: 839e30807651ff53efa713f707ba0744c6c6c9bcb2c9c8afc0e299c93f772cc9a0ef294ba7e15f7049280556404d9b2e96b74f28e456aa36130af05bc7cfe035
- Descriptors with key origin information imported through `importmulti` will have their key origin information stored in the wallet for use with creating PSBTs.
- If `bip32derivs` of both `walletprocesspsbt` and `walletcreatefundedpsbt` is set to true but the key metadata for a public key has not been updated yet, then that key will have a derivation path as if it were just an independent key (i.e. no derivation path and its master fingerprint is itself)
Miscellaneous Wallet changes
----------------------------
- The key metadata will need to be upgraded the first time that the HD seed is available.
For unencrypted wallets this will occur on wallet loading.
For encrypted wallets this will occur the first time the wallet is unlocked.
The `importmulti` RPC now supports importing of addresses from descriptors. A "desc" parameter can be provided instead of the "scriptPubKey" in a request, as well as an optional range for ranged descriptors to specify the start and end of the range to import. More information about
descriptors can be found [here](https://github.com/bitcoin/bitcoin/blob/master/doc/descriptors.md).
- The RPC `createwallet` now has an optional `blank` argument that can be used to create a blank wallet.
Blank wallets do not have any keys or HD seed.
They cannot be opened in software older than 0.18.
Once a blank wallet has a HD seed set (by using `sethdseed`) or private keys, scripts, addresses, and other watch only things have been imported, the wallet is no longer blank and can be opened in 0.17.x.
Encrypting a blank wallet will also set a HD seed for it.
- The minimum required version of QT has been increased from 5.2 to 5.5.1 (the [depends system](https://github.com/bitcoin/bitcoin/blob/master/depends/README.md) provides 5.9.7)