• Updated mensbeam/intl dependency.
• Moved scope methods from Element to OpenElementsStack. They don't need to be used outside of the parser and don't make sense there.
• Cleaned up parse errors. Displaying what is expected or found is not helpful.
• Moved the ancestor and descendant methods into their own traits along with the compare method which they share.
• Made DocumentFragment use only the descendant methods and not the ancestor ones.
• Fixed error in README.
• Added an option to use Document::loadHTML or Document::load to parse a document.
• Made the DOM elements use dW\HTML5 namespace instead of dW\HTML5\DOM.
• Fixed where TreeBuilder wasn't being properly destructed when the parser is finished.
• Discovered a way to extend the existing DOM tools, so Parser now works with custom classes for the DOM.
• \dW\HTML5\DOM is no longer needed, and its functionality has been split between DOM\Document and DOM\Element.
• Printer's functionality is now handled by DOM\Document\saveHTML through a trait to make maintenance easier.
• Normalized Exception constants.
• Fixed various typing bugs.
