Release v1.0.4 changes

• Crates and runtime version bumped to "1.0.4" (#3630).

This release does not affect gear protocols execution layer or user space libraries, so there is no need to update programs.

Node binary updates: NOT NECESSARY
External node/runtime api changes level: PATCH

Node binary

• Execution strategies (as well as native execution) are deprecated (#3608).

The only option how to execute runtime now is wasm.

Runtime

• Cost of governance operations on Vara runtime reduced by 5 times (#3620).

• Fixed bug of incorrect post-calculation of Gear::runs extrinsic weight (#3535).

All of the explorers (e.g. polkadot.js.org/apps) now show block weight correctly.

• Substrate version bumped from v0.9.43 to v1.0.0 (#3608).

• pallet-im-online no longer keeps data of heartbeat in storage, migrations applied;
• Internal changes and improvement are present.

Full Changelog: v1.0.3...v1.0.4