Added option quoteDataWithSpaces (default - true) to unparse config.

[alexander-gush]

If quoteDataWithSpaces set to false, unparse result doesn't quote data with spaces in the start or in the end.

[pokoli]

Hi @alexander-gush,

Thanks for your pull request. Could you please explain why this feature is usefull?
In order to accept a PR we require to have a minimal test on our test suite that ensures that your behaviour works as expected. Could you please add one?

[alexander-gush]

Thank you!
Some times it may be unexpectedly that quotes appears in output but there are not in input. So I think we should give possibility to control it.
I added test.

[pokoli]

We are still missing the doc update (which is in the docs folder of the repository) to include the new option

[alexander-gush]

We are still missing the doc update (which is in the docs folder of the repository) to include the new option

I added this option to the documentation.

[pokoli]

Hi @alexander-gush,

There are some conflicts with the master branch. Could you plesae rebase your work on top on it and fix them?

Thanks in advance!