Dot notation with single or double quotes should fail to parse

[glyn]

See:

• https://cburgmer.github.io/json-path-comparison/results/dot_notation_with_double_quotes.html
• https://cburgmer.github.io/json-path-comparison/results/dot_notation_with_double_quotes_after_recursive_descent.html
• https://cburgmer.github.io/json-path-comparison/results/dot_notation_with_single_quotes.html
• https://cburgmer.github.io/json-path-comparison/results/dot_notation_with_single_quotes_after_recursive_descent.html
• https://cburgmer.github.io/json-path-comparison/results/dot_notation_with_single_quotes_and_dot.html

[glyn]

The current behaviour seems like a reasonable extension and quite a few implementations agree with it. Leaving it be for now.