remove unwrap in favor of if let

src/value/parse.rs

@@ -839,7 +839,7 @@ impl Value {
             }
             q @ '>' | q @ '<' => {
                 let mut span = toks.next().unwrap().pos();
-                IntermediateValue::Op(if toks.peek().unwrap().kind == '=' {
+                IntermediateValue::Op(if let Some(Token { kind: '=', ..}) = toks.peek() {
                     span = span.merge(toks.next().unwrap().pos());
                     match q {
                         '>' => Op::GreaterThanEqual,

tests/error.rs

@@ -172,3 +172,7 @@ error!(
     ends_with_single_eq,
     "a {color: 1 =", "Error: expected \"=\"."
 );
+error!(
+    nothing_after_gt,
+    "a {color: 1 >", "Error: Expected expression."
+);