1. improve performance of QuickSell method - by Kapitowa
https://github.com/7sat/DShop3/pull/74

2. Fix: Quick-Sell and Quick-Find on localshop - by FlorianKoerner
https://github.com/7sat/DShop3/pull/76

3. Fix errors related to csv saving

4. Fixed an issue where the cycle of stock stabilization and stock random change did not work correctly.
(Important note! Longer cycles were working incorrectly. Even if your server was using shorter cycles, it may be affected by this update. Even with the same settings, the changes may be slightly slower than before.)