Simple Close Button

• Fix mixin error

• Changed mod id from close-btn to simple-close-button
• Fixed crashing with certain screens (such as the config of 3D Skin Layers)
• Fixed many depreciation warnings
• Added Brazilian Portuguese language support (@seriousfreezing)

Updated to 1.21.2/1.21.3

Added mod support and polished code.

• Updated to 1.21
• Implemented an easier way of adding screens to apply a button to.

TODO: Implement an api to add your own entries for mod support.

• Ported down to Minecraft versions 1.20 and 1.20.1.
• Modified button widget textures to compensate for the pre 1.20.2 way of making button widgets.

Initial release.