openImpliesClose logic seems to be tripped up by intervening tags

Given the following input:

``` html
one bold two
```

htmlparser2 generates events equivalent to the following:
``` html
one bold two
```

Notice how the opening of the second `p` does not implicitly close the first. 

If you remove the intervening `` tag:

``` html
one bold two
```

then htmlparser2 generates the correct events:
``` html
one bold two
```