Fix the word splitting on the TESTS environment variable.
Add a testlet to r.lua.
Add a test for deleting to end of line
Fix d$ etc. by removing the bodge in '$' which adjusted the end if in an
action; this is instead done by the recently-added handling of inclusive vs
exclusive motions.
Add some work-in-progress on actions with motions, experimentally bound to
't'.
Further work towards new op{motion}.  Temporary t is more like c now, though
only h works as a motion.
Start a new file vi_ops.lua for the operators that take motions.
More WIP on motion commands.
Implement counts before the motions by keeping state during table lookups
(with __index).