Add anki21 format and fix multi import bug

src/data_provider/card_sets.rs

@@ -1,5 +1,5 @@
-use crate::lang::SetOrderMode;
-use crate::repetitions::CardSetSettings;
+use crate::lang::{AppendMode, CardSetSettings, OrderMode};
+
 use rusqlite::Connection;
 
 pub fn load_sets(connection: &Connection) -> Vec<CardSetSettings> {
@@ -16,7 +16,8 @@ pub fn load_sets(connection: &Connection) -> Vec<CardSetSettings> {
                 filter: row.get(4)?,
                 count: None,
                 worst_words_list: None,
-                open_mode: SetOrderMode::Default,
+                open_mode: OrderMode::Default,
+                append_mode: AppendMode::Full,
             })
         })
         .unwrap();

src/data_provider/card_stats.rs

@@ -1,5 +1,4 @@
-use crate::lang::CardStatistics;
-use crate::repetitions::CardSetSettings;
+use crate::lang::{CardSetSettings, CardStatistics};
 use rusqlite::Connection;
 use std::time::Instant;