Updated button callbacks.

v1.1c

Updated button callbacks.

Improved buttons and gradients.

• Buttons are now frames, so that other tiles can be placed inside them.
• Gradients can now be modified like colours, using mix(), lighten() and darken().

Fixed layout positioning bug.

v1.1a

Fixed layout positioning bug.

Added aspect ratios and colour gradients.

• Added aspect ratio option for tiles.
• Added colour gradients.
• Fixed various bugs.

Initial SwagUI release.

v1.0

Update README.md