Important Chains without balances.account or system.account should supply "BalanceLock": "BalanceLockTo212" to their types to use the previous-generation BalanceLock (when querying locks)

Changes:

Add support for balances.account in all applicable derives (incl. vesting module)
Inject and use SignedExtensions by name from V11 metadata (V4 extrinsics only)
Add typings for api.tx.*.* - the polkadot-types-from-chain now also generates these
Remove additional V1-only derives (staking.recentlyOffline, balances.nominatorsFor)
Add .isMax() on int values, an opposite of isZero() (e.g. u128, as well as derived, e.g. Balances)
Add .keyPrefix() to all api.query.* complementing the .key() call, both returning a hex string
Council derives now takes bootstrapping (member, no elections) into account
Account derives now allow for an optional indices module (not required)
Adjust balances fees derivation with optional transfer and creation fees (removed in Substrate)
Adjust enum .toJSON() to return type name as specified