* handle uint64 value in JSON
* Add integer_tests
* Add get_unsigned_integer() on ParsedJson::BasicIterator
* Write 'u' to tape when the value seems unsigned
* Add to handle 'u' element
* Brush up integer_tests.cpp
* Append tests/integer_tests in .gitignore
* Add comments to is_integer and is_unsigned_integer
* Get rid of dynamic allocation in ParsedJson::Iterator.
* Implement copy assignment operator for ParsedJson::Iterator.
* ParsedJson::Iterator is now a template class.
* Checks for issue 150. We run through the test files with sanitizers on.
* Fix for issue 150: the remaining issues were an overrun on the depth capacity and an "off-by-1" overrun on tape capacity.
* Improving makefile.
* Safer git submodule command.
* Getting get 'git' on circleci
* Minor change to benchmark cmake
* Moved ParsedJson and its Iterator to separate .cpp files
* Uncommented functions, that has nothing to do with this pr
* Removed really_inline comments
* Reinstated some inline functions to restore previous performance
* Re-merged iterator in ParsedJson
* Uncommented some WARN_UNUSED