Addresses http://b/issue?id=2220888 by including curly
single quotes underneath the straight single quote key.
Introduces a number of other useful Unicode glyphs as well.
Increase key height in portrait.
Increase spacebar width and reduce punctuation width.
Increase vertical target area for spacebar to avoid accidentally
hitting "V" and "B".
Increase height of candidate strip.
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
