Fix history bug

src/import.rs

@@ -489,7 +489,7 @@ impl ImportState {
                         add_words(word, connection);
                         index += 1;
                         let mut progress = progress.lock();
-                        *progress = index as f32 / total_len;
+                        *progress = (index as f32 / total_len).min(1.0);
                     }
 
                     state.dictionary.append(&mut words_list);