Add support for querying elements by CSS selector.

Uses a fork of the  hackage, altered to use  as a lexer.

Parse web (or Gemini) pages & extract title.

Add noops for window (re)sizing, resorting to throwing errors.

Add WebDriver noops for frames.

Add noop stubs to control non-existant windows.

Allow navigating (tab) history.

Allow testing reloading of webpages.

Refactoring, allowing reading which URL was loaded.

Allow loading webpage, commit missing files.

init