v0.98.1

• Make the TypeScript generation script more re-usable (Thanks to @xlc)
• Add .entries() for all map-types, returning storage keys and values
• Add .signAsync to submittable extrinsics (Thanks to @c410-f3r)
• Cleanup circular references between internal dependencies
• Support for new Substrate democracy with preimages in derive
• Alignment of types with Substrate/Polkadot master branches