Change the capitalisation algorithm to use Android's
'getCursorCapsMode'. This requires a bit of cursor calculations but
should feel more standard.
The auto completion only triggers after a space is typed or backspace is
pressed.
Keep track of end-of-sentence characters while typing and automatically
enable shift when appropriate.
The last few characters just before the cursor need to be queried in
some cases: Begin of input, cursor has moved or text is deleted.
This might have a performance cost.
This normally only enable shift but it also needs to disable shift when
the cursor moves.
