Made the JSON parser almost compatible with RFC 8259
Made the JSON parser almost compatible with RFC 8259

Now it passes all but 3 tests from https://github.com/nst/JSONTestSuite. These are not rejected unescaped control characters in string literals: 0x00, 0x0A, 0x09.

FYI different 3 tests fail for the standard `json` module of Python 3.9.7.

vlasovskikh/funcparserlib