Render <br> fix.

Miles,

we find small issue with line breaks converting. When we parsing BBCode

```html
[center][color=#DB1702][b][size=4]Information[/size][/b][/color]
[color=#14496b]
[b]
string 1
string 2
string 3
[/b][/color]
[/center]
```
we get next

```html
string 1<br><br><br>
string 2<br><br><br>
string 3<br><br><br>
```

our fix decreases count of line breaks & we get next render

```html
string 1<br>string 2<br>string 3<br>
```

Thx