Release 1.9.0

Either download the gog-downloader php binary below or use docker image rikudousage/gog-downloader:1.9.0.
If you're on Windows, you can also download the GogDownloaderSetup.exe installer.

What's Changed

• Feat: Add support for S3 storage class by @RikudouSage in #36
• Fix: Use tags instead of metadata to get rid off slow operations by @RikudouSage in #37

Full Changelog: v1.8.0...v1.9.0