/SyntaxLexx

Adapt finding the main.js array position in production builds

1

This ensures we don't have to guess the posision of the 'main.js' entry in `manifest.json`. In some builds, the `main.css` entry goes first, thereby leading to non-enqueueing of correct production...

Added `setDefaults()` method

Accepted string values: 'd', 'm', 'w', 'y' If null is provided, the default handling for the package takes over.

Great repo!