To unify the way the unknown fields are handled, we change the global
ones to a slice of pointers as well. This makes it easier to add
generic handler code for unknown fields, if they are uniform across the
levels (global, input, output).
BIP-0174 defines the derivation path being encoded as
"<32-bit uint> <32-bit uint>*"
with the asterisk meaning 0 to n times. Which in turn means that an
empty path is valid, only the key fingerprint is mandatory.
In this commit, we update the top level module to use the newly tagged
sub-modules. Once we remove the circular dependant in these sub-modules,
then we'll no longer have to do things like this.
In this commit, we add a new function `RawTxInTapscriptSignature` that
will be used to generate signatures in the _tapscript_ context. Note
that this differs from top-level taproot as a distinct sighash is used,
and we _always_ accept a root hash to perform the proper tweak.
This was the version tagged that created the new `ecdsa` and `schnorr`
packages. Updating these pinned version lets importers properly use
these packages and build. Things build as is since we use replace
directive to point to the latest version _in the repo_ when we build.
In this commit, we create a new package to house the ECDSA-specific
logic in the new `btcec/v2` pacakge. Thsi c hange is meant to mirror the
structure of the `dcrec` package, as we'll soon slot in our own custom
BIP-340 implementation.
Now that the new `btcutil/v1.0.0` tag has been pushed, we update the new
internal modules to point to the top-level `btcd` repo via replace
directives.
