Added this.rectMode support

[sahej-dev]

I have added support for all P5 rectModes. All the following are valid:

myButton = new Clickable();
myButton.rectMode = CORNER; // Default
myButton.rectMode = CORNERS;
myButton.rectMode = CENTER;
myButton.rectMode = RADIUS;

• Click area, button rect, image, and text scaling should be working, as expected with all the rectModes.
• Changing rectMode by doing (for e.g. rectMode(CENTER) should no longer affect clickables. myButton.rectMode = CENTER must be used.
• I have also update the minified version with the latest version of the library.

I have tried not to change up the existing structure of the library too much. Please let me know if I should make any further improvements/changes to this PR.

[Lartu]

Hi there! I’m back! Thank you so much for your pull request. That said, I’m going to close it because I’ve changed the API while updating the library to p5.js 2.x, and p5.clickable no longer manages how clickables look, only their interactions. Thank you very much for your contribution!