Make paragraphs and sentences considered jumps

Surprisingly, paragraph and sentence motions are considered jumps. 

All the motions that are jumps are in :h jump-motions:
```
A "jump" is one of the following commands: "'", "`", "G", "/", "?", "n",
"N", "%", "(", ")", "[[", "]]", "{", "}", ":s", ":tag", "L", "M", "H" 
```

 I just overrode the isJump method in the motions, and it seemed to work fine.