Missing formatter

[wvdvegt]

The formatted 'F' is missing. According to https://en.cppreference.com/w/c/io/fprintf 'F' seems to be an alias for 'f'.

In 'FormatObject.cs/private void LoadDefaultFormatters()' simply add

AddFormatter('F', floatFormatter);

directly after the line:

AddFormatter('f', floatFormatter);