Makes the user/contacts dictionary lookup faster. This is necessary because
there's more in these dictionaries now and it's written in Java.

Fix an auto-caps issue when moving the cursor. And do it a little lazily.

Fixed a bug that was causing user dictionary words to get a much
higher weightage than the main dictionary.

Don't auto-correct if the typed word has more than one uppercase letter.
Also, delay applying shift state to the keyboard so that fast backspaces are not interrupted by the
time taken to render the shifted/unshifted keyboard.
Show ellipsis on the ?123 key