```
sed -z -i 's/Type: Standards Track/Type: Specification/' bip-0*.md
sed -z -i 's/Type: Standards Track/Type: Specification/' bip-0*.mediawiki
```
After the scripted changes, the changes to BIP-40, BIP-41, and BIP-63
were undone, because it breaks CI.
These three BIPs only exist conceptually and their proposal documents
are missing which causes changes to them ot break the CI. I defer the
changes to these BIPs to a separate pull request to get CI to pass.
Although the variant "implementor" predominated for much of the late 20th
century, today "implementer" is considered standard, and the former spelling
triggers the typos spelling checker.
Assuming a by one increment in the keytype of the silent payments output
fields, the following numeral to 0x09 in the hexadecimal system is 0x0a,
not 0x10.
When using BIP 353 for on-chain addresses (incl silent payments),
it is useful to be able to include DNSSEC proof information in
outputs of a PSBT, which we enable here by defining a standard
field for it.
It is no longer expected that SegWitV0 inputs have no witness-utxo field.
Reverting the order of checks avoids this assumption (while still relying on the mandatory lack of witness-utxo for legacy inputs).
`PSBT_OUT_TAP_LEAF_SCRIPT` seemed to appear in output key sections by copy-paste from input section. First, it shares the same byte no as `PSBT_OUT_TAP_TREE`, second its description talks about "witness"
The description of keytype incorrectly said it had to be unique: it's the
whole key that must be unique, not the keytype (since we can for instance
have multiple xpubs in the global map).
There are some edge cases with unsigned tx serialization, so this adds
test vectors for them. Specifically, an unsigned tx with witness
serialization is invalid, a transaction with 0 inputs and 0 outputs is
valid, and a transaction with 0 inputs and non-0 outputs is valid.
Previously these tests were using 0x0f as the unknown field number. As
these have now been defined, change them to use 0xf0 instead as it is
unlikely we will use those anything soon.
