Noted some failures. "Fixed" the code to do what I want it to do for
the (no sanskrit stacking, tibetan stacking) case [which is exercised
by this keyboard only].
ACIP's 'WA' represents Wylie's 'wa', but ACIP's 'ZHVA' represents Wylie's
'zhwa'. The key for wasur is the same as the key for the twentieth
consonant in extended Wylie, but not in ACIP.
