v2.6.1

• Breaking change Following on the 2.0 release, @polkadot/wasm was updated to 1.1+. sr25510 now only verifies 0.8+ signatures, closing the loop on dropping Substrate 1.x-era support
• Add signatureVerify (message: Uint8Array | string, signature: Uint8Array | string, addressOrPublicKey: Uint8Array | string): VerifyResult to verify any signature, regardless of type. Returns validity & detected crypto type.
• Add cryptoIsReady (): boolean function to check status of initialization
• Add addressCheckChecksum (decoded: Uint8Array) as an helper to extract and verify the ss58 checksum
• Swap to yarn 2, allow use in yarn 2 projects