Various fixes (see comment)

[sagotch]

Fixed:

• Automaton conflicts
• Escaped char in strings (ascii ones)
• Nested arrays
• Arrays ending with comma
• Date handling (actually not really fixed since I still parse it as string)

Also added various unit tests.

[mackwic]

Seems to be an awesome work ! Let me check that locally and I'll merge this.

Thanks for your contribution.

[sagotch]

I will work a little bit more on this later, but since I do not know when I think it was a time for a pull request. :+1:

[mackwic]

Seems to works right. Thanks again for contributing. :+1:

[sagotch]

My pleasure.