mpaland/printf v4.0.0

4.0.0

on GitHub

Finally exponential support arrived in version 4.0.0! 🥂

• Scientific (exponential) notation support for types %e and %g. Major thanks to @mjasperse for his cool contribution!
  If exponential support is not needed, define PRINTF_DISABLE_SUPPORT_EXPONENTIAL and v4 behaves like v3
• Added support for the vprintf() function
• Updated catch2 to v2.7.0
• Added more test cases (over 400 now!)