make FileFormat and Kind non exhaustive

Author: mmalecot

src/lib.rs

@@ -330,6 +330,7 @@ impl From<&[u8]> for FileFormat {
 
 /// A kind of file format.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[non_exhaustive]
 pub enum Kind {
     /// Files and directories stored in a single, possibly compressed, archive.
     Archive,

src/macros.rs

@@ -23,6 +23,7 @@ macro_rules! formats {
     } => {
         /// A file format.
         #[derive(Clone, Copy, Debug, Eq, PartialEq)]
+        #[non_exhaustive]
         pub enum FileFormat {
             $(
                 #[doc=concat!($name, $(" (", $short_name, ")",)? ".")]