Scalecodec

Process `Address` and `ExtrinsicSignature` types from metadata

Process Address and ExtrinsicSignature types from metadata

**Full Changelog**: https://github.com/polkascan/py-scale-codec/compare/v1.3.0a...v1.3.0a2

Alpha release with `MetadataV15` support

**Full Changelog**: https://github.com/polkascan/py-scale-codec/compare/v1.2.7...v1.3.0a

What's Changed
* CheckMetadataHash signed extension support by arjanz in https://github.com/polkascan/py-scale-codec/pull/120


**Full Changelog**: https://github.com/polkascan/py-scale-codec/compare/v1.2.9...v1.2.10

What's Changed
* Removed library vulnerability from dependencies by arjanz in https://github.com/polkascan/py-scale-codec/pull/119
* Cache get decoder class from string by thewhaleking in https://github.com/polkascan/py-scale-codec/pull/117

New Contributors
* thewhaleking made their first contribution in https://github.com/polkascan/py-scale-codec/pull/117

**Full Changelog**: https://github.com/polkascan/py-scale-codec/compare/v1.2.8...v1.2.9