v3.5.1

Contributed:

• Add Dock network identifiers (Thanks to https://github.com/lovesh)

Changes:

• Use cross-environment TextDecoder & TextEncoder from the polkadot-js polyfills
• Add isBase{32, 58, 64} to @polkadot/util-crypto
• Add base64{Pad, Trim} to add/remove padding characters
• Add createFromJson(json) to keyring (create pair without adding)
• Balance formatter now outputs 4 numbers after the decimal point