General feedback field not supported

[PipeKnight]

Hi, thanks for your work, I tried to use this library for playing with different quiz formats and I discovered that not it doesn't support "general feedback" option for questions. Link to docs:
https://docs.moodle.org/400/en/GIFT_format#Format_symbols
####general feedback

In the quiz, it looks like this:

// question: 47  name: Algebraic Expressions
::Algebraic Expressions::[html]<p dir\="ltr" style\="text-align\: left;">Rate your knowledge on Algebraic Expressions</p>{
	=<p dir\="ltr" style\="text-align\: left;">5</p>
	=<p dir\="ltr" style\="text-align\: left;">4</p>
	=<p dir\="ltr" style\="text-align\: left;">3</p>
	=<p dir\="ltr" style\="text-align\: left;">2</p>
	=<p dir\="ltr" style\="text-align\: left;">1</p>
	####<p dir\="ltr" style\="text-align\: left;">Thanks for answer!</p>
}

And now it is parsed like this:

(=) Option: <p dir\="ltr" style\="text-align\: left;">5</p> [1.0]
(=) Option: <p dir\="ltr" style\="text-align\: left;">4</p> [1.0]
(=) Option: <p dir\="ltr" style\="text-align\: left;">3</p> [1.0]
(=) Option: <p dir\="ltr" style\="text-align\: left;">2</p> [1.0]
(=) Option: <p dir\="ltr" style\="text-align\: left;">1</p> [1.0] (###<p dir\)
(=) Option: "ltr" style\="text-align\: left;">Thanks for answer!</p> [1.0]

[HTML also seems to be not supported straight out of the box, but I roughly fix it after parsing. Maybe better to fix it in preprocessing, but it's not so easy]

This seems like not a big issue, but I'm stuck with adding new regexp or modifying existing ones. Could you help me?