Cambridge

- made it possible for input words that are plural to be found in cache if its singular form is there

- got response word before multi-threading to avoid data dependency between threads
- fixed deleting only one word from cache, the word with "," at the end

- fixed a bug related to deleting multiple words from cache
- made error message even clearer when not getting the right html document because of the user's temporary slow network
- reformatting spell checking prompt

added toggling dictionary feature when word not found

- fixed some formatting problems related to words like "beat", which has a long list of meanings and uncommon display attributes

- done rework on Webster parsing codes because Webster website has made a great update
- extracted Webster printing color scheme for future user customization