Fix semirandom srs bug

src/data_provider/sqlite.rs

@@ -17,7 +17,9 @@ pub fn create_db() {
     }
 }
 
-fn ensure_db_schema(_: &Connection) {}
+fn ensure_db_schema(connection: &Connection) {
+    
+}
 
 fn create_tables(conn: &Connection) {
     make_card_set(conn).unwrap();

src/lang.rs

@@ -542,7 +542,7 @@ impl SRSModule for SemiRandomSRSModule {
     fn next(&mut self, set: &mut DeckData) -> usize {
         let index = self.last_weights.sample(&mut self.generator);
 
-        if self.history.contains(&index) {
+        if self.history.contains(&index) && self.history.len() != 1 {
             return self.next(set);
         }