Nano second format support

[IncredibleAaron]

• I have searched the issues of this repo and believe that this is not a duplicate.
• I have searched the documentation and believe that my question is not covered.

Issue

for now It seems that nano seconds is not supported. Any plan for this? THANKS!

like
parse('12:04:23.020000010')

or parse('12:04:23.020000010').format('HH:mm:ss.SSSSSSSSS')