Bump subxt from 0.29.0 to 0.30.1

[dependabot]

Bumps subxt from 0.29.0 to 0.30.1.

Release notes

Sourced from subxt's releases.

v0.30.0

[0.30.0] - 2023-07-24

This release beings with it a number of exciting additions. Let's cover a few of the most significant ones:

Light client support (unstable)

This release adds support for light clients using Smoldot, both when compiling native binaries and when compiling to WASM to run in a browser environment. This is unstable for now while we continue testing it and work on making use of the new RPC APIs.

Here's how to use it:

use subxt::{
    client::{LightClient, LightClientBuilder},
    PolkadotConfig
};
use subxt_signer::sr25519::dev;
// Create a light client:
let api = LightClient::<PolkadotConfig>::builder()
// You can also pass a chain spec directly using build, which is preferred:
.build_from_url("ws://127.0.0.1:9944")
.await?;
// Working with the interface is then the same as before:
let dest = dev::bob().public_key().into();
let balance_transfer_tx = polkadot::tx().balances().transfer(dest, 10_000);
let events = api
.tx()
.sign_and_submit_then_watch_default(&balance_transfer_tx, &dev::alice())
.await?
.wait_for_finalized_success()
.await?;

At the moment you may encounter certain things that don't work; please file an issue if you do!

V15 Metadata

This release stabilizes the metadata V15 interface, which brings a few changes but primarily allows you to interact with Runtime APIs via an ergonomic Subxt interface:

// We can use the static interface to interact in a type safe way:
#[subxt::subxt(runtime_metadata_path = "path/to/metadata.scale")]
pub mod polkadot {}
let runtime_call = polkadot::apis()
.metadata()
.metadata_versions();
</tr></table>

... (truncated)

Changelog

Sourced from subxt's changelog.

[0.30.1] - 2023-07-25

This patch release fixes a small issue whereby using runtime_metadata_url in the Subxt macro would still attempt to download unstable metadata, which can fail at the moment if the chain has not updated to stable V15 metadata yet (which has a couple of changes from the last unstable version). Note that you're generally encouraged to use runtime_metadata_path instead, which does not have this issue.

Fixes

• codegen: Fetch and decode metadata version then fallback (#1092)

[0.30.0] - 2023-07-24

This release beings with it a number of exciting additions. Let's cover a few of the most significant ones:

Light client support (unstable)

This release adds support for light clients using Smoldot, both when compiling native binaries and when compiling to WASM to run in a browser environment. This is unstable for now while we continue testing it and work on making use of the new RPC APIs.

Here's how to use it:

use subxt::{
    client::{LightClient, LightClientBuilder},
    PolkadotConfig
};
use subxt_signer::sr25519::dev;
// Create a light client:
let api = LightClient::<PolkadotConfig>::builder()
// You can also pass a chain spec directly using build, which is preferred:
.build_from_url("ws://127.0.0.1:9944")
.await?;
// Working with the interface is then the same as before:
let dest = dev::bob().public_key().into();
let balance_transfer_tx = polkadot::tx().balances().transfer(dest, 10_000);
let events = api
.tx()
.sign_and_submit_then_watch_default(&balance_transfer_tx, &dev::alice())
.await?
.wait_for_finalized_success()
.await?;

At the moment you may encounter certain things that don't work; please file an issue if you do!

V15 Metadata

This release stabilizes the metadata V15 interface, which brings a few changes but primarily allows you to interact with Runtime APIs via an ergonomic Subxt interface:

</tr></table> 

... (truncated)

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[ascjones]

@dependabot ignore this minor version

Superseded by #1236

[dependabot]

OK, I won't notify you about version 0.30.x again, unless you re-open this PR. 😢