Please add cursor support for editing

[tc-mgriff]

When i try and edit something in the request fields using my cursor all i get is A, B, C, D. This makes using wuzz really frustrating when I'm editing requests and trying different things. The same goes for the copy and paste issue.

Try using wuzz to play around with something like https://overthewire.org/wargames/natas/ and you'll see what i mean.