Open some doc(hidden) functionality

Author: khvzak

src/buffer.rs

@@ -25,7 +25,6 @@ impl Buffer {
     }
 
     /// Returns `true` if the buffer is empty.
-    #[doc(hidden)]
     pub fn is_empty(&self) -> bool {
         self.len() == 0
     }

src/thread.rs

@@ -472,7 +472,6 @@ impl Thread {
     /// ```
     #[cfg(any(feature = "luau", doc))]
     #[cfg_attr(docsrs, doc(cfg(feature = "luau")))]
-    #[doc(hidden)]
     pub fn sandbox(&self) -> Result<()> {
         let lua = self.0.lua.lock();
         let state = lua.state();

src/vector.rs

@@ -38,7 +38,6 @@ impl Vector {
     }
 
     /// Creates a new vector with all components set to `0.0`.
-    #[doc(hidden)]
     pub const fn zero() -> Self {
         Self([0.0; Self::SIZE])
     }