deltasql 1.6.4 是一个维护版本，主要是 bug 修复和服务器端的可视化增强，包括：
- Get Synchronization Table is now a main menu entry.
- Automatic branch selection when creating a synchronization table was added.
- Branch selection was fixed in the main synchronization form.
- It was previously not possible to synchronize from BRANCH_X to BRANCH_X.
- The same fixes were applied to deltaclient for Windows.
- The dbredactor client includes now a JDBC driver for SQLite databases.
- A favicon and other visual enhancements were provided in the navigation bar