make unicode normalization optional

it's not always necessary or desired, and adds quite a lot to the binary
size (for instance, the problem it solves is pretty much non-existent in
web browsers, and wasm builds are also very sensitive to code size)

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/text.rs b/tests/text.rs
index 81201a1..1ad16ae 100644
--- a/tests/text.rs
+++ b/tests/text.rs
@@ -130,6 +130,7 @@ fn wide() {
     );
 }
 
+#[cfg(feature = "unicode-normalization")]
 #[test]
 fn combining() {
     let mut parser = vt100::Parser::default();