Ability to provide more context to errors

[cody1024d]

It would be nice to provide an options parameter to allow more context to be given in the case of an error. In my scenario, I'm providing users with the feedback, and right now, in a long LaTeX document, it may be hard to spot the occurence of the error, without additional context to where the error occurred.

I believe this is the part that needs to be configurable within the code:

node-latex/index.js

Lines 55 to 63 in 780c588

	lines.forEach((line, i) => {
	if (line.startsWith('! Undefined control sequence.')) {
	errors.push(lines[i - 1])
	errors.push(lines[i])
	errors.push(lines[i + 1])
	} else if (line.startsWith('!')) {
	errors.push(line)
	}
	})