Add Name Surrounding Char Option

[matthew-hennefarth]

Closes #10. Open to changing the name of the configuration variable.

[codybuell]

Hey @matthew-hennefarth, just getting to this now. So according to RFC 5322 single quotes are not allowed. It's double quotes or nothing, double quotes only being required if special characters are required. So, that said, we ought to change the default.

If we change the default to just be double quotes do you still have a need to make this configurable?

[matthew-hennefarth]

If the standard is either double or no quotes, then it should be just a boolean. use_quotes = true if double quotes should surround the name and use_quotes = false for no quotes. The default could be then to use double quotes.

[codybuell]

That works for me, both on the boolean and default of true.

[matthew-hennefarth]

Sounds good. I will fix the PR soon.

[matthew-hennefarth]

Okay, PR now has a boolean use_quotes which specifies if names should be surrounded by double quotes. I have also included the link to the RFC 5322 reference in the README.md.

[codybuell]

Great! Thanks for the contribution!