Preserving soft breaks when serializing to HTML

[DougReeder]

serializeHTMLFromNodes appears to strip newline characters from text, even when createSoftBreakPlugin(optionsSoftBreakPlugin) is among the plugins passed.

Is there a way to convert newlines to <br/> when serializing to HTML?

[bensquire]

This #954 and the corresponding PR might help @DougReeder , but it wont convert new lines to <br/>.

[DougReeder]

So, this will require code changes to serializeHTMLFromNodes ?

[bensquire]

I'm no veteran on the library, but that'd be my take...