Repeat using `.`; drop without yanking using `X`

• . will now repeat the last command (at least until the VBA project resets)
• I have changed X to be a delete-without-yanking operator rather than a synonym of dh. Since Word doesn't have registers, this gives you a chance
• If you prefix an operator with (a space), leading/trailing whitespace within a paragraph will be included. E.g., d<space>f, (where <space> means pressing the spacebar) will delete to and including the next comma, and will also delete any whitespace after that comma.