0.7.0 release (#2575)

* WIP preparing 0.7.0 release

* fix: re-enable examples

* fix doctests in `sqlx-core`

* cherry-pick CHANGELOG entry for 0.6.3

* add actions workflow for examples

* fix(cli): close connection after running migrations

* fix examples

* fix(sqlite): fix parsing of URLs via `Any`

* fix(example): don't let Postgres `listen` example run forever

* fix Postgres `transaction` example

examples/sqlite/todos/Cargo.toml

@@ -9,4 +9,4 @@ anyhow = "1.0"
 futures = "0.3"
 sqlx = { path = "../../../", features = ["sqlite", "runtime-tokio-native-tls"] }
 structopt = "0.3"
-tokio = { version = "1.20.0", features = ["macros"]}
+tokio = { version = "1.20.0", features = ["rt", "macros"]}

examples/sqlite/todos/src/main.rs

@@ -14,7 +14,7 @@ enum Command {
     Done { id: i64 },
 }
 
-#[tokio::main]
+#[tokio::main(flavor = "current_thread")]
 async fn main() -> anyhow::Result<()> {
     let args = Args::from_args_safe()?;
     let pool = SqlitePool::connect(&env::var("DATABASE_URL")?).await?;
@@ -53,7 +53,7 @@ VALUES ( ?1 )
         "#,
         description
     )
-    .execute(&mut conn)
+    .execute(&mut *conn)
     .await?
     .last_insert_rowid();