Do not listen to lifecycle events on Mac Catalyst (#60)

Make auto-subscribe to app notifications configurable (#59)

So we can avoid them on macCatalyst

Fix adding custom collation sequences (#58)

Collating sequences (#57)

* Add SQLiteDatabase.addCollation() and removeCollation()
* Update CI
* Update GRDB to version 7

Expose methods to release memory (#56)

- Expose releaseMemory() and releaseMemoryEventually()
- Update GRDB

Coordinate truncate and close (#55)

Prevent long-running tasks from preventing the database from closing (#…

…54)

Use writeWithoutTransaction when appropriate (#53)

This pull request fixes SQLITE_BUSY errors caused by the shift to IMMEDIATE transactions.

Updating the transaction type https://sqlite.org/lang_transaction.html#deferred_immediate_and_exclusive_transactions from the default DEFERRED to IMMEDIATE exposed some issues with the way SQLite wrapped GRDB. SQLite was wrapping some writes in an unnecessary transaction. This caused issues because IMMEDIATE transactions immediately begin a write, meaning other writes will receive a SQLITE_BUSY error. Before applying the changes in this pull request, vacuuming and checkpointing tests failed when IMMEDIATE transactions were used.

Catalyst fixes (#52)

- Fall back to URL(filePath:directoryHint:) if URL(string:) fails
- Use immediate transactions for writes groue/GRDB.swift#1485

Add support for VACUUM INTO (#51)

- Add support for VACUUM INTO
- Update to Swift 5.9