Add context menu and startup URL (and fixed a LOT of bugs)!

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Sorry it’s been like 2 weeks, but after finishing my other project, I’m back at it!
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Over the last 2 days, I worked a LOT on the context menu and bug fixes (like loading text files into the engine, and old ones I caught working on this!). The context menu changes its options based on what things you right-click (like a real context menu), so for example, when I click a link, I get way more different options than if I clicked a tab. This allows for a lot of customization, and it’s basically fully implemented (minus a few features I want to add).
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The startup URL is kind of a part of that; when clicking a link, you have the choice to open it in a new window, and getting a URL that can change on startup really made it easy to add the feature!
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So overall a good day. What I’m going to work on next is the settings menu.
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Thanks for reading!