chores: slim deps and upgrade docs

packages/core/Cargo.toml

@@ -22,7 +22,7 @@ longest-increasing-subsequence = "0.1.0"
 # internall used
 log = { version = "0.4", features = ["release_max_level_off"] }
 
-futures-util = "0.3.15"
+futures-util = { version = "0.3.15", no_default_features = true }
 
 smallvec = "1.6.1"
 
@@ -51,7 +51,7 @@ simple_logger = "1.13.0"
 dioxus-core-macro = { path = "../core-macro", version = "0.1.2" }
 
 [features]
-default = ["serialize"]
+default = []
 serialize = ["serde", "serde_repr"]
 
 [[bench]]

packages/core/examples/tasks.rs

@@ -0,0 +1 @@
+fn main() {}

packages/core/src/util.rs

@@ -68,7 +68,8 @@ impl Future for YieldNow {
 ///
 /// `ScopeId` is a `usize` that is unique across the entire VirtualDOM - but not unique across time. If a component is
 /// unmounted, then the `ScopeId` will be reused for a new component.
-#[derive(serde::Serialize, serde::Deserialize, Copy, Clone, PartialEq, Eq, Hash, Debug)]
+#[cfg_attr(feature = "serialize", derive(serde::Serialize, serde::Deserialize))]
+#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
 pub struct ScopeId(pub usize);
 
 /// An Element's unique identifier.