Update book to 0.8

Cargo.toml

@@ -15,7 +15,7 @@ members = [
 
 [dev-dependencies]
 rand = "0.8.5"
-relm4 = "0.7.0"
-relm4-components = "0.7.0"
-tokio = { version = "1.25", features = ["rt", "macros", "time", "rt-multi-thread", "sync"] }
-tracker = "0.2.0"
+relm4 = "0.8.0"
+relm4-components = "0.8.0"
+tokio = { version = "1.36", features = ["rt", "macros", "time", "rt-multi-thread", "sync"] }
+tracker = "0.2.1"

README.md

@@ -9,3 +9,5 @@ Contributions and improvements are always welcome!
 
 + 0.4: https://relm4.org/book/0.4
 + 0.5: https://relm4.org/book/0.5
++ 0.6: https://relm4.org/book/0.6
++ 0.7: https://relm4.org/book/0.7

examples/libadwaita/Cargo.toml

@@ -7,9 +7,9 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dev-dependencies]
-rand = "0.8.4"
-relm4 = { version = "0.7.0-beta.2", features = ["libadwaita"] }
+rand = "0.8.5"
+relm4 = { version = "0.8.0", features = ["libadwaita"] }
 
 [[example]]
 name = "simple_manual"
-path = "simple_manual.rs"
+path = "simple_manual.rs"

src/SUMMARY.md

@@ -35,3 +35,4 @@
   - [0.4 to 0.5](migrations/0_4_to_0_5.md)
   - [0.5 to 0.6](migrations/0_5_to_0_6.md)
   - [0.6 to 0.7](migrations/0_6_to_0_7.md)
+  - [0.7 to 0.8](migrations/0_7_to_0_8.md)

src/migrations/0_7_to_0_8.md

@@ -0,0 +1,5 @@
+# Migration from v0.7 to v0.8
+
+Since 0.8 was released at the same day as 0.7, there are not many changes.
+It is worth noting though, that the `async-trait` crate was removed in favor of regular async traits available since Rust 1.75.
+This means that all manual uses of `#[async_trait]` for `AsyncComponent` or similar traits have to be removed.