v0.4.0

What's Changed

• bumped wails version to 2.12 by @arunksoman in #1
• Added minio docker compose for testing by @arunksoman in #2
• Shows only one toast with progressbar on multi file upload by @arunksoman in #3
• Version number taken from wails.json, removed version.json by @arunksoman in #4

Full Changelog: v0.3.0...v0.4.0