Release v0.3.1
Changes in this Release:
- feat: support taproot output descriptor.
- feat: add scripttree valid api
- feat: add tolower API
- feat: support SIGHASH_RANGEPROOF
- fix: set pegin & issuance flag on single txin format.
- fix: support c++20 (change logger)
- fix: support cmake 3.20
- fix: sighashtype string
- fix: rename root hash to base hash.
- doc: add version. update README.md