Thanks for making the great library!

Do you have plans to support a parser that allows spaces instead of the 'T' character in the format YYYY-MM-DD HH:MM:SS.mmmmmm?

Quoting an earlier version of the ISO 8601 standard, section 4.3.2:

The character [T] shall be used as time designator to indicate the start of the representation of the time of day component in these expressions. [...]

NOTE By mutual agreement of the partners in information interchange, the character [T] may be omitted in applications where there is no risk of confusing a date and time of day representation with others defined in this International Standard.

https://stackoverflow.com/questions/9531524/in-an-iso-8601-date-is-the-t-character-mandatory