0.2.0

• Update README with build instructions for Android.
• Add MIT license.
• Make main content scrollable.
• Fix screen rotation breaking download.
• Reorder some buttons.
• Make layout slightly more responsive, with auto-flowing input fields and hybrid image/text buttons.
• Add a hint to the firmware field for its format.
• Run download/decrypt in a Service on Android.
• Other misc UI tweaks.