linebreak bug

[char101]

input:

<p>a<br>
b</p>

output:

p
  | a
  br
  |
b

[char101]

How about replacing newlines with their escape form in

https://github.com/izolate/html2pug/blob/master/src/parser.js#L184

return `${indent}| ${value.replace(/\r/g, '#{"\\r"}').replace(/\n/g, '#{"\\n"}')}`