tinyxxd 1.3.3

• Use the address sanitizer for unit tests + add tests b49cca5 (thanks @Ordoviz)
• Add tests to the Makefile 3c48309 (thanks @Ordoviz)
• Add asterisks to output in autoskip mode (-a), 2204d75 (thanks @Ordoviz)
• Fix bss buffer overflows 8c5cb0f (thanks @Ordoviz)
• Fix -a -E -R always behaving incorrectly 27df989 (thanks @Ordoviz)
• Use EXIT_FAILURE instead of 1.
• Update documentation.