chore(deps): update topcoat requirement from =0.8.0 to =0.9.0

[dependabot]

Updates the requirements on topcoat to permit the latest version.

Release notes

Sourced from topcoat's releases.

v0.9.0

• Server push with live! and connected
• Suspense and error boundaries
• Stable identities for state and live regions
• More capable runtime expressions
• Stateful hot reload
• Reactive UI components, sidebars, and form fields
• Routing and server integration
• Client IPs and trusted proxies
• Cheaply cloneable errors
• Upgrading from 0.8.1

Server push with live! and connected

Keep server-rendered content updating after the page finishes loading. live! and emit! render the updates; connected(cx) asks Topcoat to keep them flowing over a WebSocket.

Here's the chat example. Its Chat app state stores messages and notifies subscribers when a message arrives:

use topcoat::{
    Result,
    context::{Cx, app_context},
    runtime::{connected, shard},
    view::{View, emit, live},
};
#[shard]
async fn chat_box(cx: &Cx) -> Result<impl View> {
Ok(live! {
let chat = app_context::<Chat>(cx);
let mut changed = chat.subscribe();
loop {
let token = emit! {
<ul>
for message in chat.messages() {
<li>(message)</li>
}
</ul>
}?;
if !connected(cx) {
break Ok(token);
}
changed.recv().await.ok();
}
})
}

The HTTP render shows the current messages and finishes. The browser then connects and runs the shard again with connected(cx) == true. Send a message in one tab and every connected tab updates.

... (truncated)

Commits

• 96e8f9e ci: fix release-plz
• d5e215c chore: release v0.9.0 (#409)
• bcf3457 feat(runtime): support websocket connection scoped to shards (#445)
• 0792dc7 feat(runtime): support streaming for shards (#444)
• 91614c0 feat(runtime): add WebSocket connections for streaming live updates (#443)
• f55827a feat(runtime): make procedure and shard paths customizable (#441)
• 2128998 feat(runtime): rewrite pages reruns without changing the URL (#440)
• d0ada17 docs: rewrite all docs 3 (#439)
• 0b2c7c1 feat(view): suspense mode (#436)
• e3a25af docs(skills): add test style
• Additional commits viewable in compare view

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