Revert to vertical moves changing selections

Don't laugh

Tweak

Pretty good surounding selection

Bunch of fixes and `a-i`

Make selection always at least size 1.

Simplify the direction marker handling

Make vertical moves non-selecting

Revert "Make moves non-selecting."

Make moves non-selecting.

Improve opening lines

Convert some code into actions

Better action macros

More insert actions

Better "available actions"