0.1.0

Added

• Upload images to Cloudflare R2 over the S3 API (SigV4, no SDK).
• Upload methods: sync, offload and stream (tachyon-r2:// stream wrapper).
• Skip thumbnails, with virtual sizes in attachment metadata.
• Tachyon URLs in the admin, REST and wp_get_attachment_url() when images may be remote.
• Delete R2 objects with the attachment.
• Settings page and TACHYON_R2_* constants.
• WP-CLI: wp tachyon-r2 status, sync, restore.