A desktop app version of the xkcd Simple Writer

1. The Ace editor no longer has a keyboard trap: press the Escape key to exit the editor after entering some words.
2. Duplicate words are removed from the less-than-simple results. This has resulted in a side effect of having the results presented in lowercase rather than as entered.
3. Added <main> and <section> elements to the app to replace <div>s.

There are now three word lists:

1. the original XKCD list;
2. the top 3,000 of Google's 10,000 most common English words;
3. the top 5,000 of Google's 10,000 most common English words.

1. The word Google word lists come from the Google 10000 English repo.
2. The word list used is Google 10000 English, which isn't constrained to "American English" and does contain profanities.
3. You can change which word list is used by commenting and un-commenting the <script> tags in the index.html file.

1. Add stemming to remove common suffixes.
2. See if the less-simple word list can be made into an ordered list with keyboard-accessible links to the word in the Ace editor. Currently this click functionality only works with a mouse.