- Shrink the scope of non-suspendable types (`#[must_not_suspend]`) for dropping them before reaching a suspend point (`.await` call). This avoids possible deadlocks, delays, and situations where `Future`s not implementing `Send`.
- Errors that may occur while locking the [Mutex](https://doc.rust-lang.org/std/sync/struct.Mutex.html) are handled properly hence a single configuration change cannot take down the whole service due to [poisoning](https://doc.rust-lang.org/std/sync/struct.Mutex.html#poisoning).
- Support pasting files from remote URLs (via `remote=` form field)
-`{server.max_content_length}` is used for download limit
- See [README.md#paste-file-from-remote-url](https://github.com/orhun/rustypaste#paste-file-from-remote-url)
- Hot reload configuration file to apply configuration changes instantly without restarting the server
### Changed
- Library: Switch to Rust 2021 edition
### Security
- Prevent serving an already expired file
In the previous versions, it was possible to view an expired file by using the correct extension (timestamp). e.g. `paste.com/expired_file.txt.1630094518049` will serve the file normally although `paste.com/expired_file.txt` says that it is expired. This version fixes this vulnerability by regex-checking the requested file's extension.