Make many functions `const`

The point is to set up repeated components or boilerplate before their
use sites.

The majority of these make sense as `const`. However, some functions
such as those regarding state may not make sense as `const`.

1 files changed, 1 insertions, 1 deletions

diff --git a/web/src/widget/slider.rs b/web/src/widget/slider.rs
index 5b203e07..55848084 100644
--- a/web/src/widget/slider.rs
+++ b/web/src/widget/slider.rs
@@ -147,7 +147,7 @@ impl State {
     /// Creates a new [`State`].
     ///
     /// [`State`]: struct.State.html
-    pub fn new() -> Self {
+    pub const fn new() -> Self {
         Self
     }
 }