chore: Remove trailing whitespace (#129)

Switch to the convention of using no trailing whitespace, even on blank lines. Also remove some unintended trailing whitespace on non-blank lines and fix a few typos.

Co-authored-by: Aaron Fenyes <aaron.fenyes@fareycircles.ooo>
Reviewed-on: #129
Reviewed-by: Vectornaut <vectornaut@nobody@nowhere.net>
Co-authored-by: Glen Whitney <glen@studioinfinity.org>
Co-committed-by: Glen Whitney <glen@studioinfinity.org>

app-proto/src/main.rs

@@ -30,7 +30,7 @@ impl AppState {
             selection: create_signal(BTreeSet::default()),
         }
     }
-    
+
     // in single-selection mode, select the given element. in multiple-selection
     // mode, toggle whether the given element is selected
     fn select(&self, element: &Rc<dyn Element>, multi: bool) {
@@ -53,10 +53,10 @@ fn main() {
     // set the console error panic hook
     #[cfg(feature = "console_error_panic_hook")]
     console_error_panic_hook::set_once();
-    
+
     sycamore::render(|| {
         provide_context(AppState::new());
-        
+
         view! {
             div(id = "sidebar") {
                 AddRemove {}
@@ -66,4 +66,4 @@ fn main() {
             Display {}
         }
     });
-}
+}