Initial release

• init command to set up the project folder
• update command to automatically update the CLI and waconfig.js
• build command to generate the CSS and templates output
• watch command to build every time a file changed
• css build command to generate only the CSS
• css watch command to only watch for changes within the CSS files
• twig build command to generate only the templates
• twig watch command to only watch for changes within the Twig template files
• Validation of CSS based on World Anvil's Security Filters
• Use LESS for a single theme and Authoring Panel CSS
• Twig template functions for reusable snippets
• Twig template functions with "slots", for more advanced reusable snippets
• Automatically check for updates