support bracketed version numbers

src/changelog.rs

@@ -24,7 +24,7 @@ pub(crate) fn read(fname: PathBuf, tag: String) -> Result<String> {
 
                     let found_tag = String::from_utf8(nd.content.clone())?;
 
-                    if found_tag == tag {
+                    if found_tag == tag || found_tag == format!("[{}]", tag) {
                         collect = true;
                     }
                 } else {
@@ -70,7 +70,7 @@ where
 #[cfg(test)]
 mod tests {
     #[test]
-    fn read_changelog() {
+    fn basic() {
         let res = super::read("testdata/basic.md".into(), "0.1.0".into());
         assert!(res.is_ok());
         let delta = res.unwrap();
@@ -79,4 +79,15 @@ mod tests {
             "Hi there this is a test\\!\n### ADDED\n  - something\n"
         )
     }
+
+    #[test]
+    fn brackets() {
+        let res = super::read("testdata/brackets.md".into(), "0.1.0".into());
+        assert!(res.is_ok());
+        let delta = res.unwrap();
+        assert_eq!(
+            delta,
+            "Hi there this is a test\\!\n### ADDED\n  - something\n"
+        )
+    }
 }

testdata/brackets.md

@@ -0,0 +1,4 @@
+## [0.1.0]
+Hi there this is a test!
+### ADDED
+- something