v2.3

• support NULL as output buffer to calculate size of output string
• fix 0 precision for 0 value integers

v2.2

• fix precision for integers
• remove global buffers and unnecessary copying & looking through strings
• cleanup code and add Doxygen style comments

v2.1

• fix problem with very big and very low "long long" values
• change exponent width from 3 to 2
• fix zero value for floating
• support for "p" (%p)

v2.0

• move all defines & macros from header to codefile
• support for "long long" (%llu, %lld, %llo, %llx)
• fix for interpreting precision in some situations
• fix unsigned (%u) for negative input
• fix h & hh length of input number specifier
• fix Clang linter warnings