Add some docs and a makefile

Makefile

@@ -0,0 +1,21 @@
+# Copyright 2022 Jeremy Wall (Jeremy@marzhilsltudios.com)
+# 
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+build:
+	cargo build
+
+test: test-firefox
+
+test-%:
+	wasm-pack test --$* --headless . --features async

src/lib.rs

@@ -65,7 +65,9 @@ where
     }
 
     /// Binds a triggering signal and associated message mapping function as
-    /// a state update for this Handler instance.
+    /// a state update for this Handler instance. This uses [`create_effect`]
+    /// so be aware that it will fire at least once when you first call it. It
+    /// is really easy to introduce an infinite signal update loop.
     pub fn bind_trigger<F, Val>(
         &'ctx self,
         cx: Scope<'ctx>,

src/tests/mod.rs

@@ -27,19 +27,6 @@ pub struct FakeState {
     value_two: i32,
 }
 
-pub enum MultiMsg {
-    Foo(Msg),
-    Bar(Msg),
-}
-
-pub struct MultiState<'ctx, D>
-where
-    D: MessageMapper<Msg, FakeState>,
-{
-    foo: &'ctx Handler<'ctx, D, FakeState, Msg>,
-    bar: &'ctx Handler<'ctx, D, FakeState, Msg>,
-}
-
 pub struct StateMachine();
 
 impl MessageMapper<Msg, FakeState> for StateMachine {