Minor issue with pasting above the last line. If I have the following example:

1 dog
2 cat
3 fox
4 moose

And I go to line 2 and SHIFT v, then y to yank cat. Then go to line 4, then use SHIFT p to paste I get this

1 dog
2 cat
3 fox
4 moosecat

What should happen is the last line (line 4) should be shifted down a line (line 5) and the yanked text should be added above it:

1 dog
2 cat
3 fox
4 cat
5 moose