Some :vi{ins,cmd} bindings not working

[benknoble]

A list of bindings that do not work:

• p and P in :vicmd—these should put the previously deleted text, but they do nothing. They work with yanks, but not deletes (e.g., hit <Esc>xp, the standard vi transpose idiom). Mapped to vi-put-after and vi-put-after
• s in :vicmd—supposed to be equivalent to cl, which works. Results in no such widget 'vi-substitute'. Mapped to vi-substitute.
• . in :vicmd—supposed to repeat previous change. Results in no such widget 'vi-repeat-change. Mapped to vi-repeate-change